One more time. The SARS_CoV2 virus is a MUTATING virus, like Influenza_A (seasonal flu).
When the SARS_CoV2 virus tries to make a copy of itself, there are changes in the SPIKE protein component.
The Antigen / Antibody relationship is very specific. When there is one amino acid change in the protein string, you have a new protein (thus you would new a antibody to neutralize the new protein). This why there is a new vaccine for seasonal flu every Sept. The alpha, beta, delta and now Omicron variants have mutated faster than once a year.
Thus a new variant becomes the dominant strain more frequently than once a year with SARS_CoV2. This is why fully vaccinated people with all the boosters can get infected a second time.
Remember with Influenza_A (seasonal flu) the vaccine for that season, is only good for that year. Influenza_A's mutating pattern is only once a year (much slower than SARS_CoV2).
The mutating pattern for SARS_CoV2 is starting to slow, but has not stablized to once a year( that a new variant becomes the dominant strain). Just review the timelines for when the alpha, beta, delta, Omicron variants became the new dominant strain of SARS_CoV2 virus.
With the vaccines you get as a kid before going to public school all of those viruses are non mutating virus. You get the vaccine as a kid and then get a booster 35 to 40 years later. This would not work for Influenza_A or SARS_CoV2 virus. These two viruses are mutating once every 12 months or less.
Have a nice day. Originally Posted by adav8s28
one more time. it's a flu shot.
thank you valued poster