Sarah A. Buchan

Estimated Effectiveness of COVID-19 Vaccines Against Omicron or Delta Symptomatic Infection and Severe Outcomes

Sarah A. Buchan, Hannah Chung, Kevin A. Brown et al. · JAMA Network Open · 2022 · 322 citations · Full text

Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study

Hannah Chung, Siyi He, Sharifa Nasreen et al. · BMJ · 2021 · 316 citations · Full text

Estimates of SARS-CoV-2 Omicron Variant Severity in Ontario, Canada

Ana Cecilia Ulloa, Sarah A. Buchan, Nick Daneman et al. · JAMA · 2022 · 305 citations · Full text

Effectiveness of COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe outcomes with variants of concern in Ontario

Sharifa Nasreen, Hannah Chung, Siyi He et al. · Nature Microbiology · 2022 · 256 citations · Full text

Vaccination, Vaccine Safety, Severe Outcomes +10

Association of COVID-19 Vaccination in Pregnancy With Adverse Peripartum Outcomes

Deshayne B. Fell, Tavleen Dhinsa, Gillian D. Alton et al. · JAMA · 2022 · 154 citations · Full text