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Malik Peiris Published a Study Comparing Antibody Level in BioNTech and Sinovac Vaccine Recipients

Published in the Lancet Microbe with Prof Ben Cowling and Prof Gabriel Leung, the study has found that recipients of the BioNTech Covid-19 vaccine have 10 times more antibodies than those who took Sinovac.

The study reports comparative data on SARS-CoV-2 vaccine immunogenicity in health-care workers in Hong Kong who received either the BNT162b2 vaccine (Comirnaty; Fosun–BioNTech) or the

inactivated virus (vero cell) vaccine

(Coronavac; Sinovac).

They have collected blood samples before vaccination, before the second dose, and 21–35 days after the second dose, testing samples for antibodies to SARS-CoV-2 using an ELISA to detect antibodies that bind to the receptor binding domain of the spike protein, testing ELISA-positive samples for neutralising antibodies with a surrogate virus neutralisation (sVNT) assay, and then a plaque reduction neutralisation test (PRNT) with live SARS-CoV-2 virus.


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