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Comparative effectiveness of 3 or 4 doses of mRNA and inactivated whole-virus vaccines against COVID-19 infection, hospitalization and severe outcomes among elderly in Singapore
oleh: Celine Y. Tan, Calvin J. Chiew, Vernon J. Lee, Benjamin Ong, David Chien Lye, Kelvin Bryan Tan
Format: | Article |
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Diterbitkan: | Elsevier 2022-12-01 |
Deskripsi
Subjek
COVID-19; SARS-CoV-2; Vaccines; mRNA vaccine; Inactivated vaccine