when people talk about a "second wave", they're implicitly referencing the 1918 flu outbreak.

so, realize this - the second wave was a mutation.

it is true that if the virus mutates, your antibodies will be of minimal use in protecting you. so, it's exceedingly important that these changes are carefully monitored. they consequently need as many samples as possible.

it is also true that a successful mutation would require that the vaccine process be rebooted. they'd have to start all over again...

you won't burn this virus out, so staying inside won't prevent a second wave. however, increasing testing to the absolute maximum possible might help, if they can catch it quickly.

https://www.investing.com/news/coronavirus/new-york-maps-coronavirus-genome-to-help-track-future-outbreaks-2154900