> What, specifically, are those mechanisms that you think prevent symptoms but allow for infection and spreading?
Asymptomatic spreading. Kids do it with SARS-CoV2 all the time.
In other words: the body sheds virus (cells fabricate virions), but the immune system reaction doesn't cause symptoms.
> Additionally, even if this mechanism exists, why would we care?
Because the virus will keep spreading and killing people as long as < 70% of people remain infectious.
In case the vaccine doesn't prevent much of the spreading, we'd be looking at years before everything is like it was before the pandemic. This is because we're not going to vaccinate 5 billion people in a matter of months all at once (too risky). This will take a while.
Additionally humans would be a reservoir for the virus to evolve in, potentially causing mutations that cause symptoms (years or decades in the future). It wouldn't actually solve the problem in the long run.
You think... a vaccine is going to CAUSE asymptomatic spreading? I think you need to start citing some science here. Things you are saying really aren't making sense.
Asymptomatic spreading. Kids do it with SARS-CoV2 all the time.
In other words: the body sheds virus (cells fabricate virions), but the immune system reaction doesn't cause symptoms.
> Additionally, even if this mechanism exists, why would we care?
Because the virus will keep spreading and killing people as long as < 70% of people remain infectious.
In case the vaccine doesn't prevent much of the spreading, we'd be looking at years before everything is like it was before the pandemic. This is because we're not going to vaccinate 5 billion people in a matter of months all at once (too risky). This will take a while.
Additionally humans would be a reservoir for the virus to evolve in, potentially causing mutations that cause symptoms (years or decades in the future). It wouldn't actually solve the problem in the long run.