1.
Euro Surveill
; 27(2)2022 01.
Artículo
en Inglés
| MEDLINE
| ID: mdl-35027105
RESUMEN
The mRNA vaccine Comirnaty and the inactivated vaccine CoronaVac are both available in Hong Kong's COVID-19 vaccination programme. We observed waning antibody levels in 850 fully vaccinated (at least 14 days passed after second dose) blood donors using ELISA and surrogate virus neutralisation test. The Comirnaty-vaccinated group's (nâ¯=â¯593) antibody levels remained over the ELISA and sVNT positive cut-offs within the first 6 months. The CoronaVac-vaccinated group's (nâ¯=â¯257) median antibody levels began to fall below the cut-offs 4 months after vaccination.