Latest Sinovac vs Pfizer study from Chile...
Dynamic IgG seropositivity after rollout of CoronaVac and BNT162b2 COVID-19 vaccines in Chile: a sentinel surveillance study
Published:September 09, 2021
You are better protected with Moderna for longer period, if you don't mind the side effects...IgG seropositivity was lower after CoronaVac than after BNT162b2 and declined over time since vaccination for CoronaVac recipients but not BNT162b2 recipients. Prolonged IgG monitoring will allow further evaluation of seropositivity overtime, providing data, in conjunction with effectiveness studies, for possible future re-assessment of vaccination strategies.
Pfizer picked a COVID-19 vaccine dose far lower than Moderna's to minimize side effects, its top scientist says


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