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Volume 5, Number 4—August 1999

Dispatch

The Surveillance of Vero Cytotoxin-Producing Escherichia coli O157 in Wales, 1990 to 1998

Rachel M. Chalmers*, Sharon M. Parry, Roland L. Salmon*, Robert M.M. Smith*, Geraldine A. Willshaw, and Tom Cheasty
Author affiliations: *Public Health Laboratory Service Communicable Disease Surveillance Centre, Cardiff, United Kingdom; †Welsh Combined Centres for Public Health, Cardiff, United Kingdom; ‡Central Public Health Laboratory, Colindale, London, United Kingdom

Main Article

Table 1

Occurrence and annual incidence of VTEC O157 in Wales, 1990–1998

Year Total no. of cases
(rate per 100,000 population) No. of sporadic cases (no. of index cases) No. of
outbreak cases Outbreak summary
(setting, mode of spread, phage and verotoxin types)
1990 32 (1.1) 28 (24) 4 Psychogeriatric ward, person to person, PT14, VT1&2.
1991 39 (1.3) 30 (28) 9 Day nursery, person to person, PT49, VT2.
1992 41 (1.4) 41 (33) 0 -
1993 34 (1.2) 26 (25) 8 Community, Meat from 1 shop, PT49, VT2.
1994 29 (1.0) 29 (24) 0 -
1995 82 (2.8) 33 (30) 49 Day nursery, person to person, PT2 VT2.
1996 38 (1.3) 38 (31) 0 -
1997 55 (1.9) 51 (41) 3 Home for the elderly mentally infirm, person to person, PT2, VT2.
1 Part of a European outbreak
1998 65 (2.2) 65 (47) 0

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