COVID-19 vaccine efficacy and effectiveness—the elephant (not) in the room
Approximately 96 COVID-19 vaccines are at various stages of clinical development.1
At present, we have the interim results of four studies published in scientific journals
(on the Pfizer–BioNTech BNT162b2 mRNA vaccine,2 the Moderna–US National Institutes
of Health [NIH] mRNA-1273 vaccine,3 the Astra...
