Dutch epidemiologists have calculated that partial vaccination can stop outbreaks of swine fever. What’’s more, mother sows do not need to be vaccinated. The research was carried out at the Institute for Animal Science and Health, Lelystad, and Utrecht University.
PhD student Don Klinkenberg calculated that partial vaccinations do not exceed the limit for the outbreak of an epidemic. If the mother sows are not vaccinated, the spread of the swine fever is limited to transfer to less than one pig production unit. Therefore a partial vaccination can successfully control an epidemic of swine fever.
An epidemic of swine fever is only possible if each pig production unit transfers the swine fever virus to an average of more than one other pig production unit. With complete vaccination the transfer of the virus remains under the limit and the epidemic eventually dies out. A disadvantage of complete vaccination is that the spread of the virus cannot be properly monitored. Virus-carrying piglets continue to be born and these form an infection danger for nearby breeding units. These piglets are scarcely detectable because the virus obtained form the mother sow does not respond to normal detection methods.
Nalinie Moerlie | alfa
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