Read this:
The mechanism of “original antigen sin” occurs when the bodyis re-exposed to a slightly evolved or different pathogen during asubsequent exposure. In this case, due to the prior exposure of thefirst antigen, memory lymphocytes do not respond to the variantantigen itself, but instead use their memory, interprets the secondantigen as the original antigen and proceeds with a secondaryresponse to the original antigen. At first glance, this may seem like afavorable phenomenon. The immune system is thus able to morequickly respond to the intrusion. However, the problem arises when the second antigen is sufficiently different from the originalantigen, and the response to the second antigen is not quite precise,leading to a less-effective response and possibly failure to clear thepathogen. In a more extreme example, the immune systemsrecognition of the pathogen is compromised, with a failure of theimmune response to even identify or flag the offending secondaryantigen, leading to a complete evasion of the pathogen from theimmune system, a situation which clearly could have deadly implications (Fig. 2).
Bottom line is that immunization actually makes every chicken die when the get the mutated form - cuz they're bodies are cranking out useless antibodies but doing nothing actually effective. Yeesh. Not an effective course of treatment or investment by the chicken grower.
But don't worry. No chance at all that OAS could happen with COVID vaccines and covid mutations .
Pretty sure anyway, cuz Fauci. #$%^&>