Why is COVID reinfection rate still so uncertain.
From recent observatory studies, SIREN in UK , and in Denmark, they both estimate seropositivity to give around 80% of protection agains infection. The former observed 90% protection against symptomatic cases. How efficacious are vaccines on the seropositive population? I've only seen reports on safety analysis. To the extend of...
Mar 24, 20211
There are studies on vaccine safety on recovered, they seem safe.
But none has been published on the efficacy of seropositive population, which is not surprising when you estimate such a study population - would have to be 20 times bigger than the ones that are published.