This is one of the interesting things about Coronaviruses, in general. They don't mutate nearly as much as influenza viruses - but they also don't have to beca

This is one of the interesting things about Coronaviruses, in general. They don't mutate nearly as much as influenza viruses - but they also don't have to because they can re-infect people anyway (albeit usually to a lesser degree). The vaccine will be interesting to see. There's a fair chance it will confer some immunity, but that those infected will may get a little sick.