-
COVID-19 vaccination and BA.1 breakthrough infection induce neutralising antibodies which are less efficient against BA.4 and BA.5 Omicron variants, Israel, March to June 2022
-
View Affiliations Hide AffiliationsMichal Mandelboimmichalman sheba.health.gov.il
-
View Citation Hide Citation
Citation style for this article: . COVID-19 vaccination and BA.1 breakthrough infection induce neutralising antibodies which are less efficient against BA.4 and BA.5 Omicron variants, Israel, March to June 2022 . Euro Surveill. 2022;27(30):pii=2200559. https://doi.org/10.2807/1560-7917.ES.2022.27.30.2200559 Received: 12 Jul 2022; Accepted: 28 Jul 2022
Abstract
This work evaluated neutralising antibody titres against wild type (WT) SARS-CoV-2 and four Omicron variants (BA.1, BA.2, BA.4 and BA.5) in healthcare workers who had breakthrough BA.1 infection. Omicron breakthrough infection in individuals vaccinated three or four times before infection resulted in increased neutralising antibodies against the WT virus. The fourth vaccine dose did not further improve the neutralising efficiency over the third dose against all Omicron variants, especially BA.4 and BA.5. An Omicron-specific vaccine may be indicated.
Full text loading...