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A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students

An outbreak of gastrointestinal illness occurred among a cohort of 56 veterinary technology and 100 veterinary science students at Massey University over an eight-week period in 2013. This coincided with calving in New Zealand’s seasonal dairy farming system and a time when calves with diarrhoea are...

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Autores principales: Benschop, Jackie, Booker, Christina M., Shadbolt, Tui, Weston, Jenny F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5606607/
https://www.ncbi.nlm.nih.gov/pubmed/29056688
http://dx.doi.org/10.3390/vetsci4020029
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author Benschop, Jackie
Booker, Christina M.
Shadbolt, Tui
Weston, Jenny F.
author_facet Benschop, Jackie
Booker, Christina M.
Shadbolt, Tui
Weston, Jenny F.
author_sort Benschop, Jackie
collection PubMed
description An outbreak of gastrointestinal illness occurred among a cohort of 56 veterinary technology and 100 veterinary science students at Massey University over an eight-week period in 2013. This coincided with calving in New Zealand’s seasonal dairy farming system and a time when calves with diarrhoea are commonly seen by veterinarians. Laboratory and epidemiological investigations were instigated by MidCentral Public Health Service (MCPHS) in conjunction with the Institute of Veterinary, Animal and Biomedical Sciences (IVABS) at Massey University. Eighty students responded to a questionnaire of which 19 met the case definition, a 24% attack rate. Faecal specimens from seven students contained Cryptosporidium oocysts and Cryptosporidium parvum IIa A18G3R1 was identified from one of the specimens. The inferred median incubation period was five days (range 1–12 days). All of the cases were self-limiting, characterized by diarrhoea, abdominal cramps, and in some cases vomiting, headache, and fever. Having contact with calves with diarrhoea was significantly associated with increased adjusted odds of being a case (OR 10.61, 95% CI 1.87–108.29 for one week of contact; OR 55.05, 95% CI 3.80–1931.18 for two weeks of contact). Outbreaks of cryptosporidiosis had occurred previously among veterinary students at Massey University, but the extremely high infectivity of C. parvum resulted in student illness despite enhanced hygiene precautions.
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spelling pubmed-56066072017-10-18 A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students Benschop, Jackie Booker, Christina M. Shadbolt, Tui Weston, Jenny F. Vet Sci Article An outbreak of gastrointestinal illness occurred among a cohort of 56 veterinary technology and 100 veterinary science students at Massey University over an eight-week period in 2013. This coincided with calving in New Zealand’s seasonal dairy farming system and a time when calves with diarrhoea are commonly seen by veterinarians. Laboratory and epidemiological investigations were instigated by MidCentral Public Health Service (MCPHS) in conjunction with the Institute of Veterinary, Animal and Biomedical Sciences (IVABS) at Massey University. Eighty students responded to a questionnaire of which 19 met the case definition, a 24% attack rate. Faecal specimens from seven students contained Cryptosporidium oocysts and Cryptosporidium parvum IIa A18G3R1 was identified from one of the specimens. The inferred median incubation period was five days (range 1–12 days). All of the cases were self-limiting, characterized by diarrhoea, abdominal cramps, and in some cases vomiting, headache, and fever. Having contact with calves with diarrhoea was significantly associated with increased adjusted odds of being a case (OR 10.61, 95% CI 1.87–108.29 for one week of contact; OR 55.05, 95% CI 3.80–1931.18 for two weeks of contact). Outbreaks of cryptosporidiosis had occurred previously among veterinary students at Massey University, but the extremely high infectivity of C. parvum resulted in student illness despite enhanced hygiene precautions. MDPI 2017-05-24 /pmc/articles/PMC5606607/ /pubmed/29056688 http://dx.doi.org/10.3390/vetsci4020029 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Benschop, Jackie
Booker, Christina M.
Shadbolt, Tui
Weston, Jenny F.
A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title_full A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title_fullStr A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title_full_unstemmed A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title_short A Retrospective Cohort Study of an Outbreak of Cryptosporidiosis among Veterinary Students
title_sort retrospective cohort study of an outbreak of cryptosporidiosis among veterinary students
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5606607/
https://www.ncbi.nlm.nih.gov/pubmed/29056688
http://dx.doi.org/10.3390/vetsci4020029
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