Harvard: Immunity from mild COVID-19 infection much better than vaccination

A preprint study from Harvard Medical School, Differential antibody dynamics to SARS-CoV-2 infection and vaccination, compared the immune responses against SARS-CoV-2 among three groups of people: (i) the ones who recovered from COVID-19, (ii) the vaccinated who did not get COVID-19, and (iii) the ones who had COVID-19 and then were vaccinated.  To cut thru…