Letter: Breakthrough risk of COVID-19
I have a rule of thumb in my personal risk analysis: if the risk seems less than 1 in a million, I don't worry much about it. I received both doses of the Pfizer/ BioNTech vaccine…
I have a rule of thumb in my personal risk analysis: if the risk seems less than 1 in a million, I don't worry much about it. I received both doses of the Pfizer/ BioNTech vaccine…