Looking at it, it shows that we may need multiple vaccines, given that there are multiple strains. If a single vaccine offers good enough resistance to infection and prevents illness or transmission even when infected though?
At that point you are basically dealing with a very nasty infectious disease that can be effectively prevented with a vaccination program. This is nothing new to humanity.
At that point you are basically dealing with a very nasty infectious disease that can be effectively prevented with a vaccination program. This is nothing new to humanity.