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Phenotypic Variation as an Important Aspect of Staphylococcal Pathogenesis (2024)
Journal Article
Morrison, D. (in press). Phenotypic Variation as an Important Aspect of Staphylococcal Pathogenesis. Frontiers in Cellular and Infection Microbiology,

An editorial which frames the Research Topic's aims and objectives placing its findings in a broader context. Staphylococcus aureus and coagulase-negative staphylococci are medically important pathogens known for a pronounced phenotypic variabili... Read More about Phenotypic Variation as an Important Aspect of Staphylococcal Pathogenesis.

Assessment of the safety and efficacy of Guanidinoacetic acid (Creamino®) as a feed additive for all animal species (2024)
Report
Morrison, D. (2024). Assessment of the safety and efficacy of Guanidinoacetic acid (Creamino®) as a feed additive for all animal species. Food Standards Agency

An application was submitted to the Food Standards Agency in May 2021 from AlzChem Trostberg GmbH (“the applicant”) for the new use authorisation of an additive guanidinoacetic acid (Creamino®), under the category of ‘nutritional additives” and funct... Read More about Assessment of the safety and efficacy of Guanidinoacetic acid (Creamino®) as a feed additive for all animal species.

Safety Assessment RP1047 Quillaja saponaria and Yucca schidigera (Magni-Phi®) (2024)
Report
Morrison, D. (2024). Safety Assessment RP1047 Quillaja saponaria and Yucca schidigera (Magni-Phi®). Food Standards Agency

An application was submitted to the Food Standards Agency in April 2021 from Phibro Animal Health Corporation (“the applicant”) for the new authorisation of an additive (Magni-Phi®), a natural preparation of powdered dry Quillaja saponaria and dry Yu... Read More about Safety Assessment RP1047 Quillaja saponaria and Yucca schidigera (Magni-Phi®).

Safety Assessment RP709 protease (subtilisin) produced by Bacillus licheniformis DSM 33099 (ProAct 360) (2024)
Report
Morrison, D. (2024). Safety Assessment RP709 protease (subtilisin) produced by Bacillus licheniformis DSM 33099 (ProAct 360). Food Standards Agency

An application was submitted to the Food Standards Agency in March 2021 from DSM Nutritional Products LTD (“the applicant”) for the new authorisation of an additive (ProAct 360) containing protease (subtilisin), under the category of “zootechnical ad... Read More about Safety Assessment RP709 protease (subtilisin) produced by Bacillus licheniformis DSM 33099 (ProAct 360).

Literature Review on Antimicrobial Resistance In Relation To The Environment In Scotland (2024)
Report
Wojcik, G., Anderson, L., Johnston, L., Moffat, S., & Morrison, D. (2024). Literature Review on Antimicrobial Resistance In Relation To The Environment In Scotland. Environmental Standards Scotland

Commissioned literature review on the key causes, impacts and controls for anti-microbial resistance (AMR) in the environment that are relevant to Scotland. The review summarises what is currently known about the impact of AMR on the environment and... Read More about Literature Review on Antimicrobial Resistance In Relation To The Environment In Scotland.

Safety Assessment RP416 Axtra XB (2023)
Report
Morrison, D. (2023). Safety Assessment RP416 Axtra XB. Food Standards Agency

An application was submitted to the Food Standards Agency in February 2021 by Genencor International B.V. (“the applicant”) for the authorisation of an additive (endo-1,4-betaxylanase and endo-1,3(4)-beta-glucanase - Axtra® XB), under retained regula... Read More about Safety Assessment RP416 Axtra XB.

UK One Health Report: Joint report on antibiotic use, antibiotic sales and antibiotic resistance (2023)
Report
Veterinary Medicines Directorate, & UK Health Security Agency. (2023). UK One Health Report: Joint report on antibiotic use, antibiotic sales and antibiotic resistance. UK Government

The third publication of the One Health Report brings together antibiotic resistance and consumption data from humans and animals, combined with data on antibiotic resistance in food and antimicrobial substances in the environment. The data presen... Read More about UK One Health Report: Joint report on antibiotic use, antibiotic sales and antibiotic resistance.

Assessment of 3-Nitrooxypropanol “3-NOP” as a feed additive for all ruminants for milk production and reproduction. (2023)
Report
Morrison, D. (2023). Assessment of 3-Nitrooxypropanol “3-NOP” as a feed additive for all ruminants for milk production and reproduction. Food Standards Agency

A request was received to provide a full risk assessment on the safety and efficacy of an additive (Bovaer ® 10) containing a minimum 10% 3-nitrooxypropanol, under Regulation (EC) No 1831/20031 under the category of ‘zootechnical’ additives, function... Read More about Assessment of 3-Nitrooxypropanol “3-NOP” as a feed additive for all ruminants for milk production and reproduction..

Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2020 (2021)
Report
Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2020. Antimicrobial Resistance and Healthcare Associated Infection Scotland

A 'One Health' approach to tackling AMR was adopted in Scotland in 2016 and acknowledges that the health of humans, animals and the environment are interconnected. Antimicrobial use and spread of infection in humans, animals and the environment contr... Read More about Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2020.

Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2019 (2021)
Report
Morrison, D. Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2019. Antimicrobial Resistance and Healthcare Associated Infection Scotland

An unplanned revision has been undertaken and corrections to figures and messages have been highlighted in red. Updates have also been made to the Animal Antimicrobial Use and Minimising the spread of AMR through the environment sections. Antimicrobi... Read More about Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2019.

A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants (2020)
Journal Article
Marano, R. B., Fernandes, T., Manaia, C. M., Nunes, O., Morrison, D., Berendonk, T. U., …Cytryn, E. (2020). A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants. Environment International, 144, Article 106

The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national surveillance programs are in place for clinical and veterinary settings... Read More about A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants.

Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2018 (2019)
Report
Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2018. Health Protection Scotland (HPS)

Antimicrobial resistance (AMR) remains a major public health issue. AMR occurs when microorganisms, such as bacteria, adapt to survive exposure to a treatment that would normally kill them. Inappropriate and unnecessary antibiotic use speeds up the d... Read More about Scottish One Health Antimicrobial Use and Antimicrobial Resistance in 2018.

Tracking Staphylococcus aureus in the intensive care unit using Whole-Genome Sequencing (2019)
Journal Article
Dancer, S. J., Adams, C. E., Smith, J., Pichon, B., Kearns, A., & Morrison, D. (2019). Tracking Staphylococcus aureus in the intensive care unit using Whole-Genome Sequencing. Journal of Hospital Infection, 103(1), 13-20. https://doi.org/10.1016/j.jhin.20

Background: Staphylococcus aureus remains an important bacterial pathogen worldwide. This study utilized known staphylococcal epidemiology to track S. aureus between different ecological reservoirs in one ten-bed intensive care unit (ICU). Methods... Read More about Tracking Staphylococcus aureus in the intensive care unit using Whole-Genome Sequencing.

Typing of methicillin resistant and sensitive Staphylococcus aureus isolated from Tamilnadu, India using DNA fingerprints by pulsed-field gel electrophoresis (2014)
Journal Article
Rajaduraipandi, K., Morrison, D., Mani, M., Nambirajan, G., Panneerselvam, K., Shobana, S., Narendran, V., & Manikandan, P. (2014). Typing of methicillin resistant and sensitive Staphylococcus aureus isolated from Tamilnadu, India using DNA fingerprints b

MRSA infection is alarming particularly in hospital set ups/community. We typed 43 isolates of Staphylococcus aureus (MRSA and MSSA) based on genomic DNA restriction fragment length polymorphisms (RFLPs). The genomic DNA of the test isolates was dige... Read More about Typing of methicillin resistant and sensitive Staphylococcus aureus isolated from Tamilnadu, India using DNA fingerprints by pulsed-field gel electrophoresis.

The Enterococci (2014)
Book Chapter
Heimer, S. R., Morrison, D., & Gilmore, M. S. (2014). The Enterococci. In Y. Tang, M. Sussman, D. Liu, & I. Poxton (Eds.), Molecular Medical Microbiology (717-730). (2nd revised). Academic Press

No abstract available.

Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) in Poland: further evidence for the changing epidemiology of MRSA. (2008)
Journal Article
Bogut, A., Kozioł-Montewka, M., Baranowicz, I., Józ’wiak, L., Al-Doori, Z., Morrison, D., …Ksia˛z’ek, A. (2007). Community-acquired methicillin-resistant
Staphylococcus aureus (CA-MRSA) in Poland:
further evidence for the changing epidemiology
of MRSA. The new microbiologica. 31. . 229-234. . ISSN 1121-7138.

This study reports the isolation of CA-MRSA strain which was found to colonize the nasal mucosa of a patient undergoing haemodialysis treatment. The MRSA was subjected to molecular analysis by Pulsed Field Gel Electrophoresis (PFGE), multiplex PCR as... Read More about Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) in Poland: further evidence for the changing epidemiology of MRSA..

Usefulness of mec-associated direct repeat unit (dru) typing in the epidemiological analysis of highly clonal methicillin-resistant Staphylococcus aureus in Scotland (2008)
Journal Article
Goering, R., Morrison, D., Al-Doori, Z., Edwards, G., & Gemmell, C. (2008). Usefulness of mec-associated direct repeat unit (dru) typing in the epidemiological analysis of highly clonal methicillin-resistant Staphylococcus aureus in Scotland. Clinical Mic

The incidence of the epidemic methicillin-resistant Staphylococcus aureus (EMRSA) strains EMRSA-15 and EMRSA-16 in Scotland has increased dramatically, now accounting for c. 70% and c. 20% of isolates, respectively. Epidemiological tracking of these... Read More about Usefulness of mec-associated direct repeat unit (dru) typing in the epidemiological analysis of highly clonal methicillin-resistant Staphylococcus aureus in Scotland.

A European laboratory network for sequence-based typing of methicillin-resistant Staphylococcus Aureus (MRSA) as a communication platform between human and veterinary medicine - an update on SeqNet.org (2008)
Journal Article
Friedrich, A. W., Witte, W., De Lencastre, H., Hryniewicz, W., Scheres, J., Westh, H., & SeqNet.Org participants. (2008). A European laboratory network for sequence-based typing of methicillin-resistant Staphylococcus Aureus (MRSA) as a communication plat

No abstract available.

Detection of meticillin-resistant Staphylococcus aureus and Panton-Valentine leukocidin directly from clinical samples and the development of a multiplex assay using real-time polymerase chain reaction (2008)
Journal Article
Renwick, L., Hardie, A., Girvan, E. K., Smith, M., Leadbetter, G., Claas, E., …Templeton, K. E. (2008). Detection of meticillin-resistant Staphylococcus aureus and Panton-Valentine leukocidin directly from clinical samples and the development of a multi

Meticillin-resistant Staphylococcus aureus (MRSA) is a major pathogen responsible for significant numbers of healthcare-associated infections and isolates containing Panton-Valentine leukocidin (PVL) that cause severe skin infections are emerging as... Read More about Detection of meticillin-resistant Staphylococcus aureus and Panton-Valentine leukocidin directly from clinical samples and the development of a multiplex assay using real-time polymerase chain reaction.

Scalded Skin Syndrome Caused by a Methicillin Sensitive Staphylococcus aureus of a type not commonly associated with exfoliative toxins in Scotland (2007)
Journal Article
Soliman, R. S., Morrison, D., Husselbee, K., & Phillips, G. (2007). Scalded Skin Syndrome Caused by a Methicillin Sensitive Staphylococcus aureus of a type not commonly associated with exfoliative toxins in Scotland. Scottish Medical Journal, 52, 53-53. https://doi.org/10.1258/rsmsmj.52.4.53a

A three-year-old boy was admitted to the hospital with a three-day history of chickenpox and a one-day history of fever and enlarging skin lesions on his chest, trunk, and around his neck. The lesions were enlarged and skin peeling over the chest wal... Read More about Scalded Skin Syndrome Caused by a Methicillin Sensitive Staphylococcus aureus of a type not commonly associated with exfoliative toxins in Scotland.

Characterisation of Staphylococcus aureus nasal and skin carriage among patients undergoing haemodialysis treatment. (2007)
Journal Article
Bogut, A., Kozioł-Montewka, M., Baranowicz, I., Jóźwiak, L., Ksiązek, A., Al-Doori, Z., …Paluch-Oleś, J. (2007). Characterisation of Staphylococcus aureus nasal
and skin carriage among patients undergoing
haemodialysis treatment. The new microbiologica. 30. . 149-154. . ISSN 1121-7138.

The aim of the study was to investigate the rate of Staphylococcus aureus nasal and skin carriage in patients undergoing haemodialysis. The cultured staphylococcal isolates were subsequently characterized by molecular methods. The study group compris... Read More about Characterisation of Staphylococcus aureus nasal and skin carriage among patients undergoing haemodialysis treatment..

Supplementary biochemical tests useful for the differentiation of oxidase positive staphylococci (2007)
Journal Article
Stepanović, S., Dakić, I., Hauschild, T., Vuković, D., Morrison, D., Ježek, P., …Petráš, P. (2007). Supplementary biochemical tests useful for the differentiation of oxidase positive staphylococci. Systematic and Applied Microbiology, 30(4), 316-3

Differentiation of the oxidase positive staphylococci, Staphylococcus sciuri, Staphylococcus lentus, Staphylococcus vitulinus and Staphylococcus fleurettii, based on tributyrin, urease, caseinase, gelatinase and DNase activity is described. These tes... Read More about Supplementary biochemical tests useful for the differentiation of oxidase positive staphylococci.

Identification and molecular characterization of mannitol salt positive, coagulase-negative staphylococci from nasal samples of medical personnel and students. (2006)
Journal Article
Shittu, A., Lin, J., Morrison, D., & Kolawole, D. (2006). Identification and molecular characterization of mannitol salt positive, coagulase-negative staphylococci from nasal samples of medical personnel and students. Journal of Medical Microbiology, 55, 317-324. https://doi.org/10.1099/jmm.0.46072-0

The identification of mannitol salt positive, coagulase-negative staphylococci (CNS) is often disregarded when Staphylococcus aureus is screened in clinical samples using mannitol salt agar. However, the emergence of CNS as important human pathogens... Read More about Identification and molecular characterization of mannitol salt positive, coagulase-negative staphylococci from nasal samples of medical personnel and students..

Evaluation of Phenotypic and Molecular Methods for Detection of Oxacillin Resistance in Members of the Staphylococcus sciuri Group. (2006)
Journal Article
Stepanović, S., Hauschild, T., Dakić, I., Al-Doori, Z., Svabic-Vlahovic, M., Ranin, L., & Morrison, D. (2006). Evaluation of Phenotypic and Molecular Methods for Detection of Oxacillin Resistance in Members of the Staphylococcus sciuri Group. Journal of Clinical Microbiology, 44, 934-937. https://doi.org/10.1128/JCM.44.3.934-937.2006

In this paper we report on an experimental evaluation of phenotypic and molecular methods as means for the detection of oxacillin resistance in members of the Staphylococcus sciuri group. A total of 109 S. sciuri group member isolates (92 S. sciuri i... Read More about Evaluation of Phenotypic and Molecular Methods for Detection of Oxacillin Resistance in Members of the Staphylococcus sciuri Group..

Spread of a single multiresistant methicillin-resistant Staphylococcus aureus clone carrying a variant of staphylococcal cassette chromosome mec type III isolated in a university hospital (2006)
Journal Article
Szczepanik, A., Kozioł-Montewka, M., Al-Doori, Z., Morrison, D., & Kaczor, D. (2007). Spread of a single multiresistant methicillin-resistant Staphylococcus aureus clone carrying a variant of staphylococcal cassette chromosome mec type III isolated in a

The purpose of the study was the molecular characterization of methicillin-resistant Staphylococcus aureus (MRSA) isolates cultured from patients treated in seven wards of a university hospital in Lublin, Poland, over a 14-month period. Eleven nosoco... Read More about Spread of a single multiresistant methicillin-resistant Staphylococcus aureus clone carrying a variant of staphylococcal cassette chromosome mec type III isolated in a university hospital.

Molecular identification and characterization of mannitol-negative methicillin-resistant Staphylococcus aureus (2006)
Journal Article
Shittu, A., Lin, J., & Morrison, D. (2007). Molecular identification and characterization of mannitol-negative methicillin-resistant Staphylococcus aureus. Diagnostic Microbiology and Infectious Disease, 57(1), 93-95. https://doi.org/10.1016/j.diagmicrobi

We report on the isolation, molecular identification, and characterization of 5 mannitol-negative methicillin-resistant Staphylococcus aureus (MRSA) from clinical samples in KwaZulu-Natal (KZN) province, South Africa. Identification based on phenotyp... Read More about Molecular identification and characterization of mannitol-negative methicillin-resistant Staphylococcus aureus.

Identification and Characterization of Clinical Isolates of Members of the Staphylococcus sciuri Group. (2005)
Journal Article
Stepanovic, S., Dakić, I., Morrison, D., Hauschild, T., Jezek, P., Petras, P., …Devriese, L. A. (2005). Identification and Characterization of Clinical Isolates of Members of the Staphylococcus sciuri Group. Journal of Clinical Microbiology, 43, 956-958. https://doi.org/10.1128/JCM.43.2.956-958.2005

A total of 28 staphylococcal isolates from human clinical specimens belonging to the Staphylococcus sciuri group were identified and characterized. The API Staph and ID32 STAPH correctly identified S. sciuri and S. lentus but not S. vitulinus strains... Read More about Identification and Characterization of Clinical Isolates of Members of the Staphylococcus sciuri Group..

The discovery of a multi-resistant Staphylococcus haemolyticus clone in the hospital and community environment in south western Nigeria. (2005)
Journal Article
Shittu, A., Lin, J., Morrison, D. & Kolawole, D. (2004). The discovery of a multi-resistant Staphylococcus haemolyticus clone in the hospital and community environment in south western Nigeria. Ostomy/wound management. 51. . 67-70. . ISSN 0889-5899.

Among clinically significant isolates of coagulase negative staphylococci, Staphylococcus haemolyticus is ranked second after Staphylococcus epidermidis. It has been associated with septicemia in newborns and various infections in persons with compro... Read More about The discovery of a multi-resistant Staphylococcus haemolyticus clone in the hospital and community environment in south western Nigeria..

Survey of Genes Encoding Staphylococcal Enterotoxins, Toxic Shock Syndrome Toxin 1, and Exfoliative Toxins in Members of the Staphylococcus sciuri Group. (2005)
Journal Article
Dakić, I., Vukovic, D., Stepanović, S., Hauschild, T., Ježek, P., Petras, P., & Morrison, D. (2005). Survey of Genes Encoding Staphylococcal Enterotoxins, Toxic Shock Syndrome Toxin 1, and Exfoliative Toxins in Members of the Staphylococcus sciuri Group. Journal of Clinical Microbiology, 43, 4875-4876. https://doi.org/10.1128/JCM.43.9.4875-4876.2005

Genes encoding staphylococcal enterotoxins (sea to see, seg, and seh), toxic shock syndrome toxin 1 (tst), and exfoliative toxins (eta and etb) were not detected in a large panel of 48 Staphylococcus sciuri group isolates tested. This strongly sugges... Read More about Survey of Genes Encoding Staphylococcal Enterotoxins, Toxic Shock Syndrome Toxin 1, and Exfoliative Toxins in Members of the Staphylococcus sciuri Group..

Guidelines for the laboratory diagnosis and susceptibility testing of methicillin-resistant Staphylococcus aureus (MRSA). (2005)
Journal Article
Brown, D. F. J., Edwards, D. I., Hawkey, P. M., Morrison, D., Ridgway, G. L., Towner, K. J., & Wren, M. W. D. (2005). Guidelines for the laboratory diagnosis and susceptibility testing of methicillin-resistant Staphylococcus aureus (MRSA). Journal of Antimicrobial Chemotherapy, 56, 1000-1018. https://doi.org/10.1093/jac/dki372

These evidence-based guidelines have been produced after a literature review of the laboratory diagnosis and susceptibility testing of methicillin-resistant Staphylococcus aureus (MRSA). We have considered the detection of MRSA in screening samples... Read More about Guidelines for the laboratory diagnosis and susceptibility testing of methicillin-resistant Staphylococcus aureus (MRSA)..

Isolation and Molecular Characterization of Staphylococcus sciuri in the Hospital Environment. (2005)
Journal Article
Dakić, I., Morrison, D., Vukovic, D., Savic, B., Shittu, A., Ježek, P., …Stepanović, S. (2005). Isolation and Molecular Characterization of Staphylococcus sciuri in the Hospital Environment. Journal of Clinical Microbiology, 43, 2782-2785. https://doi.org/10.1128/JCM.43.6.2782-2785.2005

Staphylococcus sciuri is a principally animal-associated bacterial species, but its clinical relevance for humans is increasing. Our study aimed to provide the first insight into the prevalence of this bacterium in a hospital environment. A 3-month s... Read More about Isolation and Molecular Characterization of Staphylococcus sciuri in the Hospital Environment..

Incidence of glycopeptide hetero-intermediate Staphylococcus aureus strains in Maltese hospitals (2005)
Journal Article
Borg, M. A., Zerafa, R., Morrison, D., & Cuschieri, P. (2005). Incidence of glycopeptide hetero-intermediate Staphylococcus aureus strains in Maltese hospitals. Clinical Microbiology and Infection, 11(5), 405-407. https://doi.org/10.1111/j.1469-0691.2005.

The incidence of hetero-intermediate glycopeptide susceptibility among Staphylococcus aureus isolates in Malta, a country with a high incidence of methicillin resistance, was studied by screening 454 non-repetitive S. aureus isolates on teicoplan... Read More about Incidence of glycopeptide hetero-intermediate Staphylococcus aureus strains in Maltese hospitals.

Bacteraemia with tube-coagulase-negative methicillin-resistant Staphylococcus aureus (2005)
Journal Article
Olver, W. J., Carmichael, I. C., Ziglam, H. M., & Morrison, D. (2005). Bacteraemia with tube-coagulase-negative methicillin-resistant Staphylococcus aureus. Journal of Hospital Infection, 60(1), 87-88. https://doi.org/10.1016/j.jhin.2004.10.006

Methicillin-resistant Staphylococcus aureus (MRSA) is among the most common hospital-acquired pathogens, and prevalence rates in the UK are amongst the highest in Europe.1 Routine identification of S. aureus in the medical microbiology laboratory is... Read More about Bacteraemia with tube-coagulase-negative methicillin-resistant Staphylococcus aureus.

A real-time PCR assay to detect the Panton Valentine Leukocidin toxin in staphylococci: screening Staphylococcus schleiferi subspecies coagulans strains from companion animals (2005)
Journal Article
Roberts, S., O'Shea, K., Morris, D., Robb, A., Morrison, D., & Rankin, S. (2005). A real-time PCR assay to detect the Panton Valentine Leukocidin toxin in staphylococci: screening Staphylococcus schleiferi subspecies coagulans strains from companion anima

Recent reports suggest that methicillin-resistant strains of Staphylococcus schleiferi subspecies coagulans are now commonly isolated from dogs. Given the association of a potentially mobile SCCmec type IV element with lysogenic phage-encoded Panton... Read More about A real-time PCR assay to detect the Panton Valentine Leukocidin toxin in staphylococci: screening Staphylococcus schleiferi subspecies coagulans strains from companion animals.

Re-emergence of early pandemic Staphylococcus aureus as a community-acquired meticillin-resistant clone (2005)
Journal Article
Robinson, D. A., Kearns, A. M., Holmes, A., Morrison, D., Grundmann, H., Edwards, G., …Enright, M. C. (2005). Re-emergence of early pandemic Staphylococcus aureus as a community-acquired meticillin-resistant clone. Lancet, 365(9466), 1256-1258. https://

During the 1950s, the notorious penicillin-resistant clone of Staphylococcus aureus known as phage type 80/81 emerged and caused serious hospital-acquired and community-acquired infections worldwide. This clone was largely eliminated in the 1960s, co... Read More about Re-emergence of early pandemic Staphylococcus aureus as a community-acquired meticillin-resistant clone.

A comparative evaluation of phenotypic and molecular methods in the identification of members of the Staphylococcus sciuri group (2005)
Journal Article
Stepanović, S., Dakić, I., Martel, A., Vaneechoutte, M., Morrison, D., Shittu, A., …Haesebrouck, F. (2005). A comparative evaluation of phenotypic and molecular methods in the identification of members of the Staphylococcus sciuri group. Systematic an

Members of the Staphylococcus sciuri group (S. sciuri, S. lentus, and S. vitulinus) are coagulase-negative, novobiocin-resistant staphylococci that could be distinguished from other staphylococci on the basis of positive oxidase activity. In the pres... Read More about A comparative evaluation of phenotypic and molecular methods in the identification of members of the Staphylococcus sciuri group.

Isolation and molecular characterization of multiresistant Staphylococcus sciuri and Staphylococcus haemolyticus associated with skin and soft-tissue infections. (2004)
Journal Article
Shittu, A., Lin, J., Morrison, D., & Kolawole, D. (2004). Isolation and molecular characterization of multiresistant Staphylococcus sciuri and Staphylococcus haemolyticus associated with skin and soft-tissue infections. Journal of Medical Microbiology, 53, 51-55. https://doi.org/10.1099/jmm.0.05294-0

The isolation, molecular identification and genotyping of multiresistant Staphylococcus sciuri and Staphylococcus haemolyticus from skin and soft-tissue infections are reported. Accurate and full identification of three coagulase-negative staphylococ... Read More about Isolation and molecular characterization of multiresistant Staphylococcus sciuri and Staphylococcus haemolyticus associated with skin and soft-tissue infections..

Oral streptogramins in the management of patients with methicillin-resistant Staphylococcus aureus (MRSA) infections. (2003)
Journal Article
Dancer, S. J., Robb, A., Crawford, A., & Morrison, D. (2003). Oral streptogramins in the management of patients with methicillin-resistant Staphylococcus aureus (MRSA) infections. Journal of Antimicrobial Chemotherapy, 51, 731-735. https://doi.org/10.1093/jac/dkg143

Objectives: Chronic methicillin-resistant Staphylococcus aureus (MRSA) infections in debilitated patients are difficult to treat. We studied the clinical efficacy and safety of an oral streptogramin, pristinamycin, for these patients. Patients an... Read More about Oral streptogramins in the management of patients with methicillin-resistant Staphylococcus aureus (MRSA) infections..

Gingivitis and Toothbrushes: potential roles in Viridans Streptococcal Bacteraemia. (2003)
Journal Article
Kennedy, H. F., Morrison, D., Tomlinson, D., Gibson, B. E., Bagg, J., & Gemmell, C. G. (2003). Gingivitis and Toothbrushes: potential roles in Viridans Streptococcal Bacteraemia. Journal of Infection, 46(1), 67-70. https://doi.org/10.1053/jinf.2002.1084

We report a case of Streptococcus oralis bacteraemia in a paediatric neutropenic patient with acute myeloid leukaemia whose predominant form of oral compromise was severe gingivitis, rather than mucositis. By phenotypic and genotypic analyses, the st... Read More about Gingivitis and Toothbrushes: potential roles in Viridans Streptococcal Bacteraemia..

The Enterococci. (2002)
Book Chapter
Morrison, D. (2001). The Enterococci. In M. Sussman (Ed.), Molecular Medical Microbiology, 921-936. Academic Press

Enterococci have long been known to cause community acquired infections, such as urinary tract infection and endocarditis. The lack of uniformly effective antimicrobial therapy, together with the potential for enterococci to disseminate resistance de... Read More about The Enterococci..

Identification and characterization of teicoplanin-intermediate Staphylococcus aureus blood culture isolates in NE Scotland. (2002)
Journal Article
MacKenzie, F. M., Greig, P., Morrison, D., Edwards, G., & Gould, I. M. (2002). Identification and characterization of teicoplanin-intermediate Staphylococcus aureus blood culture isolates in NE Scotland. Journal of Antimicrobial Chemotherapy, 50, 689-697. https://doi.org/10.1093/jac/dkf191

The study objective was to screen both methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive S. aureus (MSSA) isolates from blood cultures for reduced susceptibility to vancomycin and teicoplanin. A total of 72 MRSA and 143 MSS... Read More about Identification and characterization of teicoplanin-intermediate Staphylococcus aureus blood culture isolates in NE Scotland..

Bacteriostatic activity of human lactoferrin against Staphylococcus aureusis a function of its iron-binding properties and is not influenced by antibiotic resistance. (2001)
Journal Article
Aguila, A., Herrera, A. G., Morrison, D., Cosgrove, B., Perojo, A., Montesinos, I., …Brock, J. H. (2001). Bacteriostatic activity of human lactoferrin against Staphylococcus aureusis a function of its iron-binding properties and is not influenced by antibiotic resistance. FEMS Immunology and Medical Microbiology, 31, 145-152. https://doi.org/10.1111/j.1574-695X.2001.tb00511.x

The in vitro antistaphylococcal activity of lactoferrin and the antibiotic resistance of clinical Staphylococcus aureus isolates obtained from three different sites of infection were examined. Antibiotic, but not lactoferrin resistance correlated wit... Read More about Bacteriostatic activity of human lactoferrin against Staphylococcus aureusis a function of its iron-binding properties and is not influenced by antibiotic resistance..

Origins of Staphylococcus epidermidis and Streptococcus oralis causing bacteraemia in a bone marrow transplant patient. (2000)
Journal Article
Kennedy, H. F., Morrison, D., Kaufmann, M. E., Jackson, M. S., Bagg, J., Gibson, B. E., …Michie, J. R. (2000). Origins of Staphylococcus epidermidis and Streptococcus oralis causing bacteraemia in a bone marrow transplant patient. Journal of Medical Microbiology, 49, 367-370

Coagulase-negative staphylococcal bacteraemia in immunocompromised patients is often associated with the use of central venous catheters, while the proposed origin of viridans streptococci causing bacteraemia in this patient group is the oral cavity.... Read More about Origins of Staphylococcus epidermidis and Streptococcus oralis causing bacteraemia in a bone marrow transplant patient..

DNA banding pattern polymorphism in vancomycin-resistant Enterococcus faecium and criteria for defining strains. (1999)
Journal Article
Morrison, D., Woodford, N., Barrett, S. P., Sisson, P. & Cookson, B. D. (1998). DNA banding pattern polymorphism in vancomycin-resistant Enterococcus faecium and criteria for defining strains. Journal of Clinical Microbiology. 37. . 1084-1091. . ISSN 0095

The degree of DNA banding pattern polymorphism exhibited by vancomycin-resistant Enterococcus faecium (VREM) strains isolated on a renal unit over an 11-month period was investigated. Thirty VREM strains from different patients were analyzed by pulse... Read More about DNA banding pattern polymorphism in vancomycin-resistant Enterococcus faecium and criteria for defining strains..

Comparison of PCR with Phenotypic Methods for the Speciation of Enterococci (1997)
Book Chapter
Woodford, N., Egelton, C. M., & Morrison, D. (1997). Comparison of PCR with Phenotypic Methods for the Speciation of Enterococci. In Streptococci and the Host (405-408). Springer. https://doi.org/10.1007/978-1-4899-1825-3_97

In recent years, enterococci have emerged as an important cause of hospital infections, particularly in patients with serious underlying disease. There are currently 17 recognized species in the genus Enterococcus, although E. faecalis and E. faecium... Read More about Comparison of PCR with Phenotypic Methods for the Speciation of Enterococci.

PCR Typing of Enterococcus faecium (1997)
Book Chapter
Morrison, D., Jones, B., Egleton, C., & Cookson, B. D. (1997). PCR Typing of Enterococcus faecium. In Streptococci and the Host (387-391). Springer. https://doi.org/10.1007/978-1-4899-1825-3_93

In the last two decades enterococci, especially E. faecium, have emerged as a major cause of nosocomial infection. A knowledge of their epidemiology within the hospital environment is crucial for the implementation of effective infection control meas... Read More about PCR Typing of Enterococcus faecium.

Dynamics of Enterococcus faecalis Colonization of Bone Marrow Transplant Patients (1997)
Book Chapter
Pasquarella, C., Morrison, D., Savino, A., & Cookson, B. D. (1997). Dynamics of Enterococcus faecalis Colonization of Bone Marrow Transplant Patients. In Streptococci and the Host (275-279). Springer. https://doi.org/10.1007/978-1-4899-1825-3_68

Enterococci have become increasingly important as a cause of hospital acquired infections. They are reported to be the third commonest cause of hospital acquired infections, responsible for approximately 10.7% of such infections. Furthermore, enteroc... Read More about Dynamics of Enterococcus faecalis Colonization of Bone Marrow Transplant Patients.

Enterococci as emerging pathogens of humans (1997)
Book Chapter
Morrison, D., Woodford, N., & Cookson, B. D. (1996). Enterococci as emerging pathogens of humans. In D. Stewart-Tull (Ed.), The Biology of Streptococci and EnterococciLondon: Wiley-Blackwell

Strains of Glycopeptide-Resistant Enterococcus faecium Can Alter Their van Genotypes during an Outbreak (1997)
Journal Article
Woodford, N., Chadwick, P. R., Morrison, D., & Cookson, B. D. (1997). Strains of Glycopeptide-Resistant Enterococcus faecium Can Alter Their van Genotypes during an Outbreak. Journal of Clinical Microbiology, 35(11), 2966-2968

Two isolates of Enterococcus faecium with VanA glycopeptide resistance were isolated during a hospital outbreak of E. faecium with plasmid-mediated VanB resistance. Both were found to be identical to the VanB outbreak strain by pulsed-field gel elect... Read More about Strains of Glycopeptide-Resistant Enterococcus faecium Can Alter Their van Genotypes during an Outbreak.

Plasmid mediated VanB Glycopeptide resistance in Enterococci. (1995)
Journal Article
Woodford, N., Morrison, D., Johnson, A. P., Bateman, A. C., Hasting, J. G., Elliott, T. S. & Cookson, B. D. (1994). Plasmid mediated VanB Glycopeptide resistance in Enterococci. Microbial Drug Resistance. 1. . 235-240. . ISSN 1076-6294.

Enterococcus faecium, which was highly resistant to vancomycin (MIC 256 mg/liter), but susceptible to teicoplanin (MIC 2 mg/liter), caused two distinct episodes of infection on a renal unit in the United Kingdom. Pulsed field gel electrophoresis (PFG... Read More about Plasmid mediated VanB Glycopeptide resistance in Enterococci..

Current perspectives on glycopeptide resistance. (1995)
Journal Article
Woodford, N., Johnson, A. P., Morrison, D. & Speller, D. C. (1995). Current perspectives on glycopeptide resistance. Clinical Microbiology Reviews. 8. . 585-615. . ISSN 0893-8512.

In the last 5 years, clinical isolates of gram-positive bacteria with intrinsic or acquired resistance to glycopeptide antibiotics have been encountered increasingly. In many of these isolates, resistance arises from an alteration of the antibiotic t... Read More about Current perspectives on glycopeptide resistance..

Antimicrobial resistance amongst enterococci isolated in the United Kingdom: a reference laboratory perspective. (Comment in Vancomycin-dependent enterococci in the United Kingdom J Antimicrob Chemother. 1994 ) (1993)
Journal Article
Woodford, N., Morrison, D., Johnson, A. P. & George, R. C. (1992). Antimicrobial resistance amongst enterococci
isolated in the United Kingdom: a reference
laboratory perspective. (Comment in Vancomycin-dependent enterococci in the United Kingdom J Antimicrob Chemother. 1994 ). Journal of Antimicrobial Chemotherapy. 32. . 344-346. . ISSN 0305-7453.

Phenotypic and phylogenetic characterisation of some Gemella-like organisms from human infections: description of Dolosigranulum pigrum gen. nov., sp. nov. (1993)
Journal Article
Aguirre, M., Morrison, D., Cookson, B. D., Gay, F. W. & Collins, M. D. (1992). Phenotypic and phylogenetic characterisation of some Gemella-like organisms from human infections: description of Dolosigranulum pigrum gen. nov., sp. nov. The journal of applied bacteriology. 75. . 608-612. . ISSN 0021-8847.

A phylogenetic analysis was performed on two previously uncharacterized Gram-positive, catalase-negative bacteria from clinical sources. 16S rRNA sequencing studies revealed the isolates represent a new line of descent within the lactic acid group of... Read More about Phenotypic and phylogenetic characterisation of some Gemella-like organisms from human infections: description of Dolosigranulum pigrum gen. nov., sp. nov..

Comparison of high-level gentamicin resistant (HLGR) Enterococcus faecium isolates from different continents. (1993)
Journal Article
Woodford, N., Morrison, D., Cookson, B. D. & George, R. C. (1993). Comparison of high-level gentamicin resistant (HLGR) Enterococcus faecium isolates from different continents. Antimicrobial Agents and Chemotherapy. 37. . 681-684. . ISSN 0066-4804.

Eight clinical isolates of Enterococcus faecium highly resistant to gentamicin (MIC, > 1,000 mg/liter) from patients in six hospitals on three continents were investigated for evidence of spread of either a clone of high-level gentamicin-resistant (H... Read More about Comparison of high-level gentamicin resistant (HLGR) Enterococcus faecium isolates from different continents..

Application of DNA probes for rRNA and vanA genes to investigation of a nosocomial cluster of vancomycin-resistant enterococci. (1993)
Journal Article
Woodford, N., Morrison, D., Johnson, A. P., Briant, V., Cookson, B. D. & George, R. C. (1993). Application of DNA probes for rRNA and vanA genes to investigation of a nosocomial cluster of vancomycin-resistant enterococci. Journal of Clinical Microbiology. 31. . 653-658. . ISSN 0095-1137.

DNA probes specific for genes encoding rRNA and the glycopeptide resistance gene vanA were used to investigate a cluster of vancomycin-resistant (MICs, > 512 mg/liter) Enterococcus faecalis and Enterococcus faecium isolated from separate patients in... Read More about Application of DNA probes for rRNA and vanA genes to investigation of a nosocomial cluster of vancomycin-resistant enterococci..

Stomatococcus mucilaginosus: an emerging pathogen in neutropenic patients. (1992)
Journal Article
McWhinney, P. H. M., Kibbler, C. C., Gillespie, S. H., Patel, S., Morrison, D., Hoffbrand, A. V. & Prentice, H. G. (1991). Stomatococcus mucilaginosus: an emerging pathogen in neutropenic patients. Clinical Infectious Diseases. 14. . 641-646. . ISSN 1058-4838.

Stomatococcus mucilaginosus was isolated from eight neutropenic patients during nine febrile episodes over a 13-month period. Five of these isolates were from definite infections, including one case of fatal meningitis. This slime-producing, catalase... Read More about Stomatococcus mucilaginosus: an emerging pathogen in neutropenic patients..

Streptococci and Related Organism. (1992)
Book Chapter
Colman, G., Efstratiou, A., & Morrison, D. (1992). Streptococci and Related Organism. In R. G. Board, D. Jones, & F. A. Skinner (Eds.), Identification Methods in Applied and Environmental MicrobiologyWiley-Blackwell

High-level vancomycin-resistant enterococci causing hospital infections (1989)
Journal Article
Uttley, A. H. C., George, R. C., Naidoo, J., Woodford, N., Johnson, A. P., Collins, C. H., …Heptonstall, J. (1989). High-level vancomycin-resistant enterococci causing hospital infections. Epidemiology and Infection, 103(01), 173-181. https://doi.org/10

Nosocomial infection or colonization due to enterococci with high-level resistance to vancomycin (minimal inhibitory concentrations [MICs] between 64 and > 2000 mg/L) has occurred in 41 patients with renal disease. These vancomycin-resistant enter... Read More about High-level vancomycin-resistant enterococci causing hospital infections.