[2006alum]

Immunity to other coronaviruses (the ones that cause a common cold) lasts for about a year, unfortunately.  It isn't because the virus mutates, but rather because immunity to different viruses wanes at different rates (for example, immunity to chicken pox lasts a lifetime).

BC

Yikes. BC, if that's so, then does that suggest a vaccine isn't actually a panacea after all, and we will now need to live with annual COVID-19 resurgences the way we live with resurgences of the flu and common colds? Given how much more dire the case outcomes are, that's terrifying if so.

[2006alum]

Immunity to other coronaviruses (the ones that cause a common cold) lasts for about a year, unfortunately.  It isn't because the virus mutates, but rather because immunity to different viruses wanes at different rates (for example, immunity to chicken pox lasts a lifetime).

BC

Yikes. BC, if that's so, then does that suggest a vaccine isn't actually a panacea after all, and we will now need to live with annual COVID-19 resurgences the way we live with resurgences of the flu and common colds? Given how much more dire the case outcomes are, that's terrifying if so.