Horse-Specific Cryptosporidium Genotype in Human with Crohn's Disease and Arthritis

Emerg Infect Dis. 2022 Jun;28(6):1289-1291. doi: 10.3201/eid2806.220064.


We identified an unusual subtype of a Cryptosporidium sp. horse genotype as the cause of cryptosporidiosis in a 13-year-old girl in Poland who was undergoing immunosuppressive treatment for juvenile rheumatoid arthritis and Crohn's disease. The same subtype was identified in a horse the girl had ridden.

Keywords: Crohn’s disease; Cryptosporidium; cryptosporidiosis; enteric infections; genotype; horse; horse-specific; human; intestinal infections; juvenile rheumatoid arthritis; parasite; protist; transmission; zoonoses.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Arthritis*
  • Crohn Disease* / diagnosis
  • Cryptosporidiosis* / diagnosis
  • Cryptosporidium* / genetics
  • Feces
  • Genotype
  • Horses
  • Humans
  • Zoonoses