Between December 2020 and March 2021, we measured anti-SARS-CoV-2 IgG titres among 725 Israeli hospital workers vaccinated against COVID-19. Infection post-dose 1 vaccination did not increase IgG titres, and individuals infected post-dose 1 had IgG levels comparable to never-infected individuals who received a single dose, lower than fully vaccinated, never-infected individuals. This suggests dose 2, currently not offered to those infected post-dose 1, may be required in these individuals. Larger studies should confirm whether individuals infected post-dose 1 need the second.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8632408 | PMC |
| http://dx.doi.org/10.1017/S0950268821001928 | DOI Listing |
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