https://www.vetsurgeon.org/f/clinical-questions/15878/killed-calicivirus-vaccines Anyone have any experience using killed calicivirus vaccines to vaccinate pregnant queens? I have a cat breeder enquiring about it following an outbreak. Any comments or info gratefully received. Thank you in advance... Dan en-USTelligent Community 10https://www.vetsurgeon.org/thread/93769?ContentTypeID=1Wed, 17 Jul 2013 13:37:35 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:7adcd5e5-5261-44b8-840a-a89000ddc3a0Rob Loxley<p>I assume you mean the Fevaxyn range. Datasheet say not to. Maybe call Zoetis for clarification, but if anything goes wrong you&#39;re clearly well off label with a datasheet contraindication.</p> <p>ABCD also advises against vaccinating pregnant queens :&nbsp;<a target='_blank' href="http://abcd-vets.org/guidelines/guidelines_pdf/0703_ABCD_FCV_GUIDELINES.pdf">http://abcd-vets.org/guidelines/guidelines_pdf/0703_ABCD_FCV_GUIDELINES.pdf</a></p> <p>Further, why isn&#39;t the queen already vaccinated prior to mating? Does she have a calici problem - if so then my experience is that vaccination won&#39;t be a panacea... See the above link for more suggestions</p><div style="clear:both;"></div>