> 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.
It was T-cell immunity, not humoral immunity like with antibodies. Absence of antibodies != absence of immunity.
And here's the citation: https://www.nature.com/articles/s41586-020-2550-z