Advice for users of live Porcine Reproductive and Respiratory Syndrome 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

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