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Cryptosporidium felis in faeces from cats in the UK
  1. V. Scorza, MV, PhD1,
  2. A. Willmott, BVM&S, MRCVS3,
  3. D. Gunn-Moore, BSc(Hon), BVM&S, PhD, FHEA, MANZCVS, MRCVS, RCVS Specialist in Feline Medicine2 and
  4. M. R. Lappin, DVM, PhD, DACVIM.1
  1. 1Department of Clinical Sciences, Colorado State University,Ft Collins,Colorado, USA
  2. 2Royal (Dick) School ofVeterinary Studies and The Roslin Institute, The University of Edinburgh, Easter Bush Campus,Roslin, UK
  3. 3Rosemullion Veterinary Hospital,66 Melvill Road, Falmouth,Cornwall, UK
  1. E-mail for correspondence: vscorza{at}

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Cryptosporidium spp. are protozoan parasites that can cause significant gastrointestinal disease in humans and animals. Cryptosporidium spp. are usually host-specific; cats are commonly infected with Cryptosporidium felis, but Cryptosporidium parvum and Cryptosporidium muris have also been reported (Scorza and Tangtrongsup 2010). The majority of the Cryptosporidium DNA amplified from 14,469 human faecal samples in the UK was Cryptosporidium hominis (51.4 per cent) or C parvum (44.0 per cent) (Elwin and others 2012). However, C felis (38 of 14, 469 samples; 0.26 per cent) was identified among the unusual genotypes that cause human infections in the UK (Elwin and others 2012).

Cryptosporidium oocysts or antibodies were first detected in cats in Scotland in 1991–1995. These studies reported prevalence rates of Cryptosporidium spp. of 5.2 per cent (7 of 136), 10.1 per cent (10 of 99) and 12.3 per cent (7 of 57) in domestic, feral and farm cats, respectively (Mtambo and others 1991, Nash and others 1993). Anti-Cryptosporidium IgG, IgM and IgA antibodies were detected in 192 (74 per cent), 84 (33 per cent) and 67 (26 per cent) on 258 cats (Mtambo and others 1995). Recently, Cryptosporidium oocysts were not detected in 57 healthy kittens in Scotland (Gow and others 2009). Another study …

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