Change in covid-19 risk over time following vaccination with CoronaVac: test negative case-control study. Hitchings MDT, Ranzani OT, Lind ML, Dorion M, et al. BMJ 2022;377:e070102.

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Amedeo Smart

Independent Medical Education

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Hitchings MDT, Ranzani OT, Lind ML, Dorion M, et al. Change in covid-19 risk over time following vaccination with CoronaVac: test negative case-control study. BMJ 2022;377:e070102.
PMID: 35697361