Hank, thanks for posting; it’s very interesting but above my pay grade! I guess if we had more time maybe a vaccine with no possible side effects at all would be possible? Probably not, flu shots have proven to be worthless in the past and have even caused serious health issues. And then all drug co.s would have been in a race to come in first. Oh well, it is what it is, take it or leave it, but it does seem my symptoms have worsened since getting the 2 shots but maybe that’s just coincidental and temporary. 🙄😁 Helen