Alsmark Cecilia, Nolskog Peter, Angervall Anna Lindqvist, Toepfer Michael, Winiecka-Krusnell Jadwiga, Bouwmeester Johanna, Bjelkmar Pär, Troell Karin, Lahti Elina, Beser Jessica
National Veterinary Institute, Uppsala, Sweden; Uppsala University, Uppsala, Sweden.
Department of Communicable Disease Control and Prevention of Region Västra Götaland, Sweden.
Vet Parasitol Reg Stud Reports. 2018 Dec;14:71-74. doi: 10.1016/j.vprsr.2018.09.003. Epub 2018 Sep 10.
Over a period of less than four weeks, 50 human cases of cryptosporidiosis were reported from a relatively small geographical area in Sweden. All cases were associated with visits to cattle spring pasture events at two farms (referred to as Farm A and B). Epidemiological and microbiological evidence show that contact with calves at the farms was the most likely source of Cryptosporidium infections. Gp60 sequences from human and calf isolates at Farm A were identical to each other, but differed from those at Farm B where, again, human and calf gp60 sequences were identical, proving that the two outbreaks had no common origin. As a direct consequence of these two outbreaks, and guided by knowledge gained from the outbreak investigations, the Swedish Board of Agriculture and all relevant farmer advisory organizations have updated their hygiene instructions for farm visits.
在不到四周的时间里，瑞典一个相对较小的地理区域报告了50例隐孢子虫病人类病例。所有病例都与前往两个农场（称为农场A和农场B）参加牛春季牧场活动有关。流行病学和微生物学证据表明，在农场接触小牛是隐孢子虫感染最可能的来源。农场A的人类和小牛分离株的gp60序列彼此相同，但与农场B的不同，而在农场B，人类和小牛的gp60序列同样相同，这证明这两起疫情没有共同来源。作为这两起疫情的直接结果，并在疫情调查所获知识的指导下，瑞典农业委员会和所有相关农民咨询组织更新了农场参观的卫生指导。
