I'm not a vaccine expert but influenza is a somewhat different problem. There are many different flu virus variants not a mere handful like Covid. Every year big Pharma tracks the different strains infecting people around the world (its always flu season somewhere), and tries to assemble a vaccine mix covering the top hitters expected to be dominant when flu season rolls around. As I shared recently, maybe in another thread, the drug makers are predicting lower than typical effectiveness flu vaccine this time for several reasons including this last flu season was so not typical.Where do flu vaccines fall in this catagory?
In the CDC study posted earlier, they calculated 80% ve during that period from June 20- July 17th...if reading into it right...
Relax it will all be in one shot pretty soon.
JR