Food poisoning and salmonella surveillance in England and Wales: 1982
1984
Results of a fourth annual review of food poisoning and salmonella infection in England and Wales, conducted for 1982, are reported and discussed. The major feature noted was the increase in sporadic cases of Salmonella typhimurium; the predominant phage types in humans were those commonly reported in adult cattle and calves. An upward trend has been evident since 1977, exceeding the highest previously reported figure in 1955. The 1955 epidemic was attributed to cross infection of cattle and meat at poorly controlled abattoirs; it is not known why the recent increase should be due chiefly to sporadic cases, but a possible explanation for this is offered. Case control studies showed a strong association between illness and consumption of 2 types of imported chocolate-covered bars. The outbreak was halted when a warning was issued and the bars were withdrawn from sale. (wz)
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