Abstract
Department of Medical Microbiology, Ninewells Hospital and Medical School, Dundee DD1 9SY, *PHLS Respiratory and Systemic Infection Laboratory, Central Public Health Laboratory, London NW9 5HT, †Division of Bacterial and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA, ‡Department of Dermatology, Ninewells Hospital, Dundee DD1 9SY and Public Health Medicine, Tayside Health Board, King's Cross Hospital, Dundee DD3 8EA