Advice for users of live Porcine Reproductive and Respiratory Syndrome (PRRS) vaccines

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The VMD has been made aware of an incident in Denmark involving an outbreak of Porcine Reproductive and Respiratory Syndrome (PRRS).

This outbreak has been caused by an emergent recombinant strain of PRRS virus which is believed to have resulted from the recombination of vaccine strains from two live PRRS vaccines which had both been used on the farm.

Further investigation is ongoing. Whilst waiting for further information the European Medicines Agency (EMA) has produced some advice for all users of live PRRS vaccines. The advice is contained in the last item in the EMA’s press release.

The VMD would also like to remind all users to report any cases of adverse reactions or suspected lack of efficacy involving these vaccines to the relevant marketing authorisation holder or direct to the VMD via our online reporting form.

Published 6 December 2019

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