elbows
Well-Known Member
One more thing about the mutation stuff. Despite all the routine cliched scary stuff about deadly viruses mutating in even more deadly ways, the main implication of continual virus evolution that we will face multiple times in our lives is something else entirely.
Immunity. There is more than one reason why our immunity to a virus may fade over time. It could be our own immune systems becoming less primed to deal with that particular virus again as the years go by, for reasons to do with our own biology. But the other reason this happens is down to viruses that mutate gradually over time, or recombine parts of themselves with other strains when the opportunity arises. With those, when such events happen it means they are sufficiently different from what our immune system has dealt with before, that they are less likely to evoke the best immune response, and our bodies have to fight them using more generic immune responses until our immune system 'learns' about the new variety.
This description contains numerous oversimplifications, hopefully none of them are too misleading.
Immunity. There is more than one reason why our immunity to a virus may fade over time. It could be our own immune systems becoming less primed to deal with that particular virus again as the years go by, for reasons to do with our own biology. But the other reason this happens is down to viruses that mutate gradually over time, or recombine parts of themselves with other strains when the opportunity arises. With those, when such events happen it means they are sufficiently different from what our immune system has dealt with before, that they are less likely to evoke the best immune response, and our bodies have to fight them using more generic immune responses until our immune system 'learns' about the new variety.
This description contains numerous oversimplifications, hopefully none of them are too misleading.