Publications by authors named "H W Frederik Waldeck"
Since 2018, Dutch dairy farmers are obliged to opt for one of 4 routes to achieve BVDV freedom in the national BVDV eradication program. This observational study evaluated efficacy of the total BVDV program using indicators such as number of persistent infected cattle (PI's), percentage of dairy herds with a BVDV-free status, percentage of BVDV-free dairy herds with evidence of introduction of BVDV and, as well as a cost calculation per route. The Dutch BVDV program appeared to be successful as the percentage of BVDV-free dairy herds increased from 59 percent at the start of the program to 89 percent by the end of 2023.
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- * A study examined risk factors for new BVDV infections in certified BVDV-free dairy herds by comparing herds that lost their free status to those that maintained it, using data from 149 case farms and 148 control farms from 2018 to 2021.
- * Key risk factors for losing BVDV-free status included purchasing cattle from non-BVD-free herds, having a secondary profession with cattle exposure, and housing young calves with adults,
Article Synopsis
- In 2023, an outbreak of bluetongue virus serotype 3 (BTV-3) in the Netherlands severely affected ruminants, particularly causing clinical signs and mortality in sheep.
- Data from monitoring systems showed BTV-3 infections confirmed in multiple animal species, with sheep experiencing the most severe effects.
- The study suggests that BTV-3 might persist through winter, emphasizing the need for effective vaccines to mitigate future outbreaks.
Given that bovine herpesvirus 1 (BoHV-1) -the causative agent of Infectious Bovine Rhinotracheitis (IBR)- is still endemic in most European countries, BoHV-1 free herds are subject to a considerable risk of (re)introduction of the virus. The aim of this literature review was to describe published, quantified risk factors that are relevant for the introduction of BoHV-1. The risk factors described in this study can be used as input for modeling eradication scenarios and for communication on biosecurity measures to stakeholders.
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