Limited and Short-Lasting Virus Neutralizing Titers Induced by Inactivated SARS-CoV-2 Vaccine

Emerg Infect Dis. 2021 Dec;27(12):3178-3180. doi: 10.3201/eid2712.211772. Epub 2021 Sep 24.

Abstract

In vitro determination of severe acute respiratory syndrome coronavirus 2 neutralizing antibodies induced in serum samples from recipients of the CoronaVac vaccine showed a short protection period against the original virus strain and limited protection against variants of concern. These data provide support for vaccine boosters, especially variants of concern circulate.

Keywords: COVID 19; SARS-CoV-2; Thailand; coronavirus disease; inactivated SARS-CoV-2 vaccine; neutralizing antibodies; respiratory infections; severe acute respiratory syndrome coronavirus 2; vaccination; viruses.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Neutralizing*
  • Antibodies, Viral
  • COVID-19 Vaccines
  • COVID-19*
  • Humans
  • SARS-CoV-2

Substances

  • Antibodies, Neutralizing
  • Antibodies, Viral
  • COVID-19 Vaccines