Abstract
Two doses of the BNT162b2 mRNA vaccine are highly effective against SARS-CoV-2. Here, we tested the antibody neutralization against Omicron SARS-CoV-2 after 2 and 3 doses of BNT162b2. Serum from vaccinated individuals was serially tested for its ability to neutralize wild-type SARS-CoV-2 (USA-WA1/2020) and an engineered USA-WA1/2020 bearing the Omicron spike glycoprotein. At 2 or 4 weeks post dose 2, the neutralization geometric mean titers (GMTs) against the wild-type and Omicron-spike viruses were 511 and 20, respectively; at 1 month post dose 3, the neutralization GMTs increased to 1,342 and 336; and at 4 months post dose 3, the neutralization GMTs decreased to 820 and 171. The data support a 3-dose vaccination strategy and provide a glimpse into the durability of the neutralization response against Omicron.
Original language | English (US) |
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Pages (from-to) | 485-488.e3 |
Journal | Cell Host and Microbe |
Volume | 30 |
Issue number | 4 |
DOIs | |
State | Published - Apr 13 2022 |
Keywords
- BNT162b2 vaccine
- Pfizer vacine
- SARS-CoV-2
- neutralization
- neutralization durability
- variants
ASJC Scopus subject areas
- Parasitology
- Microbiology
- Virology