https://www.vetsurgeon.org/f/clinical-questions/12278/microchips I&#39;ve been told by another vet never to microchip and vaccinate at the same time as the immune response to the vacc can result in chip reactions. I can&#39;t say I&#39;ve ever seen any problems after chipping and vaccinating together, but then I&#39;ve not followeden-USTelligent Community 10https://www.vetsurgeon.org/thread/68453?ContentTypeID=1Sat, 21 Jul 2012 11:32:56 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:9c58f2d6-a443-42af-93c6-0107f47e6d6aThomas Johnson<p>We vaccinate lots of kittens for the Cats Protection League, and microchip most of them at the first vaccine. They&#39;ve never reported any problems and we see most of them back 3 weeks later for the 2nd vaccine.</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/68449?ContentTypeID=1Sat, 21 Jul 2012 10:47:06 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:26816067-537b-45dc-8f93-bae4e799597fUtlendigur<p>I have sometimes suggested leaving &nbsp;chipping a few days after vaccination if it&#39;s a small pup or kitten and the owner decides that they do want it chipped just after I&#39;ve injected 1ml of vaccine at the chip site because (a) it&#39;s going to be sore and (b) I wonder whether putting the chip into a pocket of fluid might make it more likely to migrate, but immune reactions??<img src="https://www.vetsurgeon.org/emoticons/v2/Confused_smiley.png" alt="Confused" /></p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/68437?ContentTypeID=1Fri, 20 Jul 2012 23:20:21 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:9ba89667-921e-48a0-8f80-28294402a488Neil Wheadon<p>The suns shining and it&#39;s the start of April, it&#39;s going to be a long hot summer then<img src="https://www.vetsurgeon.org/emoticons/v2/Sad_smiley.png" alt="Sad" /></p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/68435?ContentTypeID=1Fri, 20 Jul 2012 22:49:50 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:f7df9130-3ba2-4f6f-aee3-237e88ada451Michael Woodhouse<p>Bollocks! I&#39;d say 75% of chips are done @ vacc and never had a problem. It is inert. </p><div style="clear:both;"></div>