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An outbreak
of Salmonella saint-paul infection associated with beansprouts.
Epidemiol Infect 1990 Apr;104(2):229-35
O'Mahony M, Cowden J, Smyth B, Lynch D, Hall M, Rowe B, Teare EL, Tettmar RE,
Rampling AM, Coles M, et al.
PHLS Communicable Disease Surveillance Centre, London.
In March 1988, there was an outbreak of infection by a strain of Salmonella
saint-paul with a distinctive antigenic marker. A total of 143 reports were
received between 1 March and 7 June. Preliminary investigations suggested that
raw beansprouts were a possible source of infection and a case-control study
confirmed the association. S. saint-paul of the epidemic type was isolated from
samples of beansprouts on retail sale in different cities in the United Kingdom
and from mung bean seeds on the premises of the producer who was most strongly
associated with cases. In addition, Salmonella virchow PT34 was isolated from
samples of raw beansprouts and was subsequently associated with seven cases of
infection. Four other serotypes of salmonella were also isolated from beansprouts. On 8 April the public were advised to boil beansprouts for 15
seconds before consumption, and the premises of the one producer associated with
many cases were closed. As a result of these actions there was a significant
decrease in the number of infections with S. saint-paul.
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