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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So there are a lot of factors. How much it mutates isn’t the only thing. It’s also limited by how much it even can mutate. There are only so many different working combinations for each virus. And some of those combinations aren’t different enough, so your bodies recognition will treat them the same anyway.
Your body also keeps antibodies for more dangerous viruses around longer. You could get sick with the same flu virus that you had a few months after you’ve already had it. Because it takes resources to keep those antibodies at an elevated level.
You can think of it like mall security. If shoplifting gets really bad they’ll bring in more people for a bit to stop it, and then when it calms down they’ll let the staff go.
Shoplifters can take stuff 100 different ways, so while security is trained in catching the “stuffed jacket” shoplifter, they’ll miss the “Hides inside other boxes” shoplifter. It’d be way too costly to train in every single way so you only train in the way people are doing it right now.
But a guy walking in with a mini gun, there’s not really a way he can change up his method. He can paint it hot pink but people are still going to know what it is. Security will stop anyone that walks in with a minigun once they’ve seen it once. And you’re always going to have some security around trained in stopping that because of the harm it could do.
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