Bovine babesiosis in Northumberland

McFadzean, Harriet; Strugnell, Ben; Collins, Cam; Jones, Alwyn; Phipps, L. P.; Johnson, Nicholas

doi:10.1002/vetr.910

Cited by 1 publication

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“…The value of molecular testing methods has been demonstrated through the definitive identification of the infecting Babesia species. The results of this study have already informed [ 55 ], and will continue to inform awareness campaigns and contribute to the evidence base considered for government surveillance policy in Great Britain.…”

Section: Discussionmentioning

confidence: 65%

Surveillance and Risk Analysis for Bovine Babesiosis in England and Wales to Inform Disease Distribution

McFadzean

Johnson

Phipps

et al. 2023

Animals

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Babesia divergens is a zoonotic piroplasm that infects both cattle and humans in Europe. Disease transmission occurs through Ixodes ricinus tick bites, a species that is increasing in abundance and distribution across Europe in response to climate and land-use changes. Developments in agri-environment policy and changing consumer demands may also have unintended consequences on tick-borne disease rates. Currently, B. divergens surveillance in British cattle is limited, rendering temporal trend analysis and the detection of potential zoonotic hotspots impossible. The objective of this study was to assess syndromic surveillance as a means of determining babesiosis distribution in British cattle, and to evaluate the intrinsic disease risk factors in order to respond to disease threats posed by changing environments. Samples from 95 clinically affected cattle on 70 unique holdings were screened for Babesia spp., using established blood smear examination techniques and a B. divergens-specific PCR method, between April and December 2021. B. divergens was detected in 45/95 animals (47.4%), with PCR offering the advantage of identification at species level. Infection with Anaplasma phagocytophilum was detected in 19/95 animals (20%). Co-infection was detected in five animals. The cases were recorded across multiple geographic regions and throughout the sampling period. Univariate logistic regression analysis failed to identify any statistically significant risk factors for B. divergens presence. This study demonstrates that bovine babesiosis is geographically widespread throughout England and Wales, placing a large proportion of the cattle population at risk of infection, with the potential for zoonotic transmission to humans.

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Section: Discussionmentioning

confidence: 65%