> Covid-19 hardly mutates and people who were exposed to SARS 17 years ago have immunity to covid today.
Citation, please. Any credible sources that I could find say that protection correlation with SARS is not clearly established and antibody levels to SARS fall off between 2-3 years after infection.
> there won’t be a second wave of any significance
There will or will not be but certainly not for the reasons you mention. Unlike flu and older coronaviruses, SARS-Cov-2 R_t seems to be driven exclusively by containment measures, not by seasonality, at least not at the present.
> once you've got sufficient exposure in the community a second wave won't happen regardless
We are nowhere near the "sufficient exposure" and it is already the most impactful pandemic in the last 100 years.
> Any credible sources that I could find say that protection correlation with SARS is not clearly established and antibody levels to SARS fall off between 2-3 years after infection.
It was T-cell immunity, not humoral immunity like with antibodies. Absence of antibodies != absence of immunity.
Citation, please. Any credible sources that I could find say that protection correlation with SARS is not clearly established and antibody levels to SARS fall off between 2-3 years after infection.
> there won’t be a second wave of any significance
There will or will not be but certainly not for the reasons you mention. Unlike flu and older coronaviruses, SARS-Cov-2 R_t seems to be driven exclusively by containment measures, not by seasonality, at least not at the present.
> once you've got sufficient exposure in the community a second wave won't happen regardless
We are nowhere near the "sufficient exposure" and it is already the most impactful pandemic in the last 100 years.