Re: nurses specifically, the trials simply didn't enroll people who had already had COVID-19, so they just don't have data on how safe that is. It probably is.

Re: nurses specifically, the trials simply didn't enroll people who had already had COVID-19, so they just don't have data on how safe that is. It probably is. But we just don't know yet. There's also little reason to get the vaccine in that case as we're now very confident that immunity after infection is effective and long lasting. Obviously, being exposed to it, many nurses would have been infected already and recovered; if I knew I had been infected already, I would not get vaccinated.