why can viruses like chicken pox, measles, polio, shingles be handled with a single, or pair, of vaccinations, but flu and COVID require repeat vaccinations.

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Hopefully title covers the question. All of the above are viruses and I understand that the latter two mutate. Wouldn’t the first ones I listed also mutate over time? Is the difference more a function of type of vaccines, or the viruses themselves? Why does this difference in preventative care exist? I think even the new RSV vaccine is a single does. Looking forward to understanding this better. TIA

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