Regiane Cardoso de Paula

Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study

Otávio T. Ranzani, Matt D. T. Hitchings, Murilo Dorión et al. · BMJ · 2021 · 342 citations · Full text

Veterinary Medicine, Infectious Diseases, Preventive Medicine +17

Effectiveness of ChAdOx1 vaccine in older adults during SARS-CoV-2 Gamma variant circulation in São Paulo

Matt D. T. Hitchings, Otávio T. Ranzani, Murilo Dorión et al. · Nature Communications · 2021 · 80 citations · Full text

Medicine, Infectious Diseases, Preventive Medicine +17

Effectiveness of the CoronaVac vaccine in the elderly population during a Gamma variant-associated epidemic of COVID-19 in Brazil: A test-negative case-control study

Otávio T. Ranzani, Matt D. T. Hitchings, Murilo Dorión et al. · medRxiv · 2021 · 53 citations · Full text

Veterinary Medicine, Infectious Diseases, Preventive Medicine +17

Effectiveness of the ChAdOx1 vaccine in the elderly during SARS-CoV-2 Gamma variant transmission in Brazil

Matt D. T. Hitchings, Otávio T. Ranzani, Murilo Dorión et al. · medRxiv · 2021 · 13 citations · Full text

Veterinary Medicine, Infectious Diseases, Preventive Medicine +17

Change in covid-19 risk over time following vaccination with CoronaVac: test negative case-control study

Matt D. T. Hitchings, Otávio T. Ranzani, Margaret L. Lind et al. · BMJ · 2022 · 12 citations · Full text

Veterinary Medicine, Infectious Diseases, Preventive Medicine +17