bouldersoundguy
Well-known member
There's evidence that sometime around March there was a mutation that made the virus substantially more effective at infecting cells. It didn't change the likelihood of causing illness once infected or the severity of the illness, it just made it have a higher chance of causing an infection with exposure. This could be why it exploded in Italy then in New York.
Fortunately, it looks like that mutation doesn't make it any less susceptible to the vaccines being developed. But it's entirely possible that a mutation could occur that does negate the effects of the current vaccine candidates, or that makes the virus much more deadly. The more active cases of infection there are the more opportunities there are for it to mutate, which is one of the least recognized reasons for taking aggressive measure to keep the numbers as low as possible.
Mutated coronavirus shows significant boost in infectivity | Scripps Research
Fortunately, it looks like that mutation doesn't make it any less susceptible to the vaccines being developed. But it's entirely possible that a mutation could occur that does negate the effects of the current vaccine candidates, or that makes the virus much more deadly. The more active cases of infection there are the more opportunities there are for it to mutate, which is one of the least recognized reasons for taking aggressive measure to keep the numbers as low as possible.
Mutated coronavirus shows significant boost in infectivity | Scripps Research