A review and analysis of cryptosporidiosis outbreaks in New Zealand.

Simple item page
dc.citation.issue7
dc.citation.volume150
dc.contributor.authorGarcia-R JC
dc.contributor.authorHayman DTS
dc.coverage.spatialEngland
dc.date.accessioned2024-07-23T21:57:54Z
dc.date.available2024-07-23T21:57:54Z
dc.date.issued2023-06-01
dc.description.abstractCryptosporidium is a leading global cause of diarrhoea with many reported outbreaks related to water and zoonotic transmission. This study summarizes data from Public Health Surveillance reports since 2010 in New Zealand to describe exposures associated with human diarrhoea outbreaks caused by Cryptosporidium. We investigate the species and subtypes of cases involved in some of the outbreaks to elucidate transmission routes and the predominant aetiological agents of cryptosporidiosis. For the period 2010–2017, 318 cryptosporidiosis outbreaks were reported in New Zealand resulting in 1634 cases and 20 hospitalizations. The most important mode of transmission was person-to-person (primary infections and secondary or close contacts infections), relating to 260 outbreaks and 1320 cases, followed by 113 outbreaks associated with animals, resulting in 436 human cases. From 2018 to 2021, there were 37 cryptosporidiosis outbreaks associated with 324 cases. We identified the subtypes by using polymerase chain reaction targeting the gp60 gene and the likelihood of mixed subtype infections with the Tracking of Indels by DEcomposition (TIDE) algorithm. Subtype families Ib and Ig of Cryptosporidium hominis and IIa and IId of Cryptosporidium parvum were found among cases; however, C. hominis subtypes occurred in 8 of the 11 outbreaks reviewed where molecular data were available. Examination of the chromatograms showed no mixed subtype infections in the samples assessed. Subtyping data need to be routinely incorporated into national surveillance programmes to better understand the epidemiology, sources, transmission and extent of cryptosporidiosis outbreaks in New Zealand. Our study highlights the value of integrating epidemiological information and molecular typing to investigate and manage clusters of cryptosporidiosis cases.
dc.description.confidentialfalse
dc.edition.editionJune 2023
dc.format.pagination606-611
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/36938817
dc.identifier.citationGarcia-R JC, Hayman DTS. (2023). A review and analysis of cryptosporidiosis outbreaks in New Zealand.. Parasitology. 150. 7. (pp. 606-611).
dc.identifier.doi10.1017/S0031182023000288
dc.identifier.eissn1469-8161
dc.identifier.elements-typejournal-article
dc.identifier.issn0031-1820
dc.identifier.piiS0031182023000288
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70290
dc.languageeng
dc.publisherCambridge University Press
dc.publisher.urihttps://www.cambridge.org/core/journals/parasitology/article/review-and-analysis-of-cryptosporidiosis-outbreaks-in-new-zealand/2885A3990833FBF5866AAF9AA88EE9F1
dc.relation.isPartOfParasitology
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCryptosporidiosis
dc.subjectNew Zealand
dc.subjectTIDE analysis
dc.subjectmolecular typing
dc.subjectoutbreaks
dc.subjectsurveillance
dc.subjectAnimals
dc.subjectHumans
dc.subjectCryptosporidiosis
dc.subjectCryptosporidium
dc.subjectDiarrhea
dc.subjectDisease Outbreaks
dc.subjectDNA, Protozoan
dc.subjectFeces
dc.subjectGenotype
dc.subjectNew Zealand
dc.titleA review and analysis of cryptosporidiosis outbreaks in New Zealand.
dc.typeJournal article
pubs.elements-id460754
pubs.organisational-groupOther
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