1. Joseph CA, Dedman D, Birtles RJ, Watson JM, Bartlett CLR. Legionnaires' disease surveillance: England and Wales, 1993. Communicable Disease Report 1994; 4: R109-R111.
2. Epidemiology, prevention and control of legionellosis: memorandum from a WHO meeting. Bull WHO 1990; 68:155?164.
3. Joseph CA, Harrison TG, Watson JM. Legionnaires' disease surveillance: England and Wales, 1992. Communicable Disease Report 1993; 3: R124?8126.
4. Anon. Legionnaires' disease in travellers to Spain. Communicable Disease Report 1993; 3: 117.
5. Saunders CJP, Joseph CA, Watson JM. Investigating a single case of legionnaires' disease: guidance for consultants in communicable disease control. Communicable Disease Report 1994; 4: R112-Rl14.