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 Originally Posted by Poopadoop
I think the influenza virus is a different type of virus than coronaviruses (which are generally associated with colds, not 'flus), and the reason 'flu shots are yearly is because there is a different strain that predominates each year, and the vaccine gets customised to that strain.
Ah yes yes true true, brain fart. Many of the common colds are caused by coronaviruses, influenza by the influenza viruses. My point was just that vaccinations that are good for life are rather the exception than the norm, most of them require boosters. Diphtheria, polio, tetanus, hep b, measles, mumps, rubella...
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