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| align="left" | <p>Comments by Nick Lyons MA VetMB CertCHP MRCVS</p>

| align="left" | <p>Comments by Nick Lyons MA VetMB CertCHP MRCVS</p>

<p>1. It is unlikely that vaccination confers lifelong protection. According to NOAH compendium, Rispoval IBR Marker live vaccine marketed in the UK, in all cases protection lasts for 6 months. It is likely this is the case for all other IBR vaccine products.</p>

<p>1. It is unlikely that vaccination confers lifelong protection. According to NOAH compendium, Rispoval IBR Marker live vaccine marketed in the UK, in all cases protection lasts for 6 months. </p>

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