Quote:
Originally Posted by Jdarby
The challenge with discussing “flu” deaths and vaccination is that there is no single “flu” vaccine. There are 4 types of influenza viruses (A,B,C,&D) Influenza D only effects animals. A,B, & C effect people with A having the highest chance for severe illness. Each virus type has many strains. Every year the influenza vaccine is re-engineered to target the most likely Influenza A virus strains for the upcoming year. It doesn’t even cover all of the a Influenza A strains. The strains chosen are based upon the prevalence of those strains (variants) in the population. So, even people who get the flu vaccine can contract a strain of Influenza A that the vaccine does not protect against. They can also contract B&C. Unfortunately, COVID with its developing variants may become the same battle. The more we can stop the spread of COVID through vaccination and other means, the less variants we are likely to see.
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Since the vaccinated can carry and spread the virus... it would only be a matter of time before a variant breaks the immunity. The question at that time, how contagious and pathogenic the variant is.
And though SARS-Cov only has two identified strains that attack humans, instead of the four for Influenza, just like Influenza A... SARS-Cov2 is the one that has gone pandemic (SARS-Cov1 being too pathogenic to really take a foothold). SARS-Cov2 now has several strains like Influenza A, and thus I suspect will in the end need a newly engineered vaccine each season.