Lancet study shows: those who had SARS-CoV-2 infection have more than three times the risk of dying over the following year compared with those who remain uninfected.
Lancet study shows: those who had SARS-CoV-2 infection have more than three times the risk of dying over the following year compared with those who remain uninfected.
I don’t have much else to say other than please read the study. In particular the results section talks about how they controlled for many of the concerns you are mentioning.