Epidemiology and Infection



No increase in human cases of Mycobacterium bovis disease despite resurgence of infections in cattle in the United Kingdom


K. JALAVA a1c1, J. A. JONES a1, T. GOODCHILD a2, R. CLIFTON-HADLEY a2, A. MITCHELL a2, A. STORY a1 and J. M. WATSON a1
a1 Communicable Disease Surveillance Centre, Centre for Infections, Health Protection Agency, London, UK
a2 Veterinary Laboratories Agency, New Haw, Addlestone, Surrey, UK

Article author query
jalava k   [PubMed][Google Scholar] 
jones ja   [PubMed][Google Scholar] 
goodchild t   [PubMed][Google Scholar] 
clifton-hadley r   [PubMed][Google Scholar] 
mitchell a   [PubMed][Google Scholar] 
story a   [PubMed][Google Scholar] 
watson jm   [PubMed][Google Scholar] 

Abstract

A resurgence of Mycobacterium bovis infections in cattle in the United Kingdom since the 1980s has raised concern about risks to human health. Enhanced surveillance data for England, Wales and Northern Ireland between 1993 and 2003 of culture-positive human M. bovis cases identified 315 M. bovis infections; the mean annual number of cases was 28 (range 12–41). The most frequently reported exposures were consumption of unpasteurized dairy products 41/83 (49%) and exposure to cattle 45/123 (37%). Of all cases, 249 (83%) were born before 1960. Of 50 cases born after 1960, only 14 were born in the United Kingdom. Over the same time period the annual number of new herd infections increased from 332 to 1749 as derived from the UK State Veterinary Service database. In conclusion, despite a more than fivefold increase in cattle herd infections during the 1990s, there was no increase in reported human cases.

(Accepted March 22 2006)
(Published Online June 2 2006)


Correspondence:
c1 European Programme for Intervention Epidemiology Training (EPIET), Centre for Infections, Health Protection Agency, 61 Colindale Avenue, London N7 8BG, UK. (Email: katri.jalava@hpa.org.uk)


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