1993 Cryptosporidiiosis cases associated with farm open weekend. England
54 cases were associated with farm visits, 48 of whom had been to a farm open weekend in March. Eight cases were admitted to hospital.
DAWSON, A. et al. Farm visits and zoonoses. Commun Dis Rep CDR Rev, v. 5, n. 6, p. R81-6, May 1995. ISSN 1350-9349. Disponível em: < http://www.ncbi.nlm.nih.gov/pubmed/7606275 >