Cryptosporidiosis outbreak caused by Cryptosporidium parvum subtype IIdA20G1 in neonatal calves

• DOI: 10.1111/tbed.13976
• Publication Date: 2021-01-08T13:54:41Z
• Authors: Zhenjie Zhang; Dongle Su; Xinan Meng; Ruobing Liang; Weijian Wang; Na Li; Yaqiong Guo; Aizhen Guo; Shujing Li; Zengyuan Zhao; Lihua Xiao; Yaoyu Feng
• Keywords: Cryptosporidium parvum

Cryptosporidium parvum is a major zoonotic pathogen responsible for outbreaks of severe diarrhoea in humans and calves. Almost all investigations cryptosporidiosis caused by C. have focused on its IIa subtype family industrialized nations. From December 2018 to April 2019, approximately 200 neonatal calves large cattle farm Hebei Province, China, were diagnosed with watery over 40 died. To investigate the cause outbreak, faecal samples taken during after outbreak from ≤4 weeks age (n = n 56) older 4-24 79 38). A total 18 collected ill at peak analysed four common enteric pathogens using an enzymatic immunoassay (EIA). In addition, 75 tested rotavirus EIA. All spp. PCR sequencing techniques. Of initial sick calves, ten positive parvum, five rotavirus, one coronavirus. The overall prevalence was 20.0% (15/75), no significant differences outbreak. contrast, infections significantly higher (60.0%, 24/40) than (30.4%, 17/56; p .004). infection associated presence (OR 11.19), while association observed between bovis diarrhoea. isolates identified as IIdA20G1. This few reports IId subtypes More attention should be directed towards dissemination China.