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TinyViolins · 31-35, M
That's what viruses do, especially considering they're multiplying countless number of times in millions of hosts. The chances of replication errors and mutations are pretty high.
I haven't seen all the research on the vaccines becoming available, but the goal of those is to kill the majority of the strains out there
I haven't seen all the research on the vaccines becoming available, but the goal of those is to kill the majority of the strains out there