期刊
ZOONOSES AND PUBLIC HEALTH
卷 62, 期 8, 页码 618-624出版社
WILEY
DOI: 10.1111/zph.12190
关键词
Cryptosporidium; outbreak; lunch salad
Over 250 individuals fell ill in five outbreaks caused by Cryptosporidium parvum in Finland, October-November 2012. The cases were connected by lunch meals at restaurants in four different cities. In two outbreaks, the same C. parvum IIdA17G1 subtype was found in patients' stool samples which supports a single source of infection. Frisee salad was the only common food item served at the restaurants, and consumption of lunch salad containing the frisee salad was associated with the illness. Lunch customers who responded that they had eaten lunch salad were three times more likely to have become ill than those who had not answered whether they had eaten the salad or not (RR 2.66; 95% CI 1.02-6.9, P-value <0.01). Cryptosporidiosis should be considered as a causal agent in long-lasting watery diarrhoea combined with abdominal cramps, and clinical samples should be tested for Cryptosporidium at the same time bacteria and viruses are tested. Measures to prevent contamination of 'ready-to-eat vegetables' with Cryptosporidium oocysts and methods to test frozen food samples should be developed.
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