Wonderful piece! My husband and I had "moderate" cases of COVID-19 in early March (we were infected on a plane flight from the Dominican Republic) and have now had two rounds of antibody testing. The most recent test was yesterday (July 22) and I wasn't sure if we would still have antibodies or not. But we both still do. We're sort of doing our own personal experiment to see how long these last. I do feel pretty comfortable that, even if the antibodies decline over time, we'll still have protection. It just seems like common-sense to think that the body would respond to this virus the same way as it has to others. It's very encouraging to read that people infected with the original SARS virus still have T cells responding to the virus 17 years later.