For the MRNA version, the string of code that teaches your body how to "deal" with the virus,. Is actually an identifiable marker itself. Another coded virus could be instructed to do something if the person possesses the prior MRNA string. From addendum ing additional information (yearly updates akin to flu shots) or worse... Dna warfare. Hey you have this set string MRNA.. Hey we found it easy. Now to tell your body you don't need to regenerate specific cells...or to attack specific cells as hostiles. Not saying that IS what's happening. Just that it's possible. They've been working with genetic markers for decades.

Edit: as an example-- https://www.dmbj.org.rs/jmb/pdf/2014-1/3.pdf. Covers molecular genetic markers and molecular therapy to cure illness and diseases under "personalised medicine".

The same functions can be used for generalised use too. Just throw in some dead markers that do nothing.

For the MRNA version, the string of code that teaches your body how to "deal" with the virus,. Is actually an identifiable marker itself.

Another coded virus could be instructed to do something if the person possesses the prior MRNA string. From addendum ing additional information (yearly updates akin to flu shots) or worse... Dna warfare. Hey you have this set string MRNA.. Hey we found it easy. Now to tell your body you don't need to regenerate specific cells...or to attack specific cells as hostiles.

Not saying that IS what's happening. Just that it's possible. They've been working with genetic markers for decades.