Sarah Buchan

Sarah Buchan

Assistant Professor
Dalla Lana School of Public Health

Sarah Buchan is a Scientist at Public Health Ontario (PHO) in Health Protection where she conducts applied public health research related to the epidemiology of vaccine-preventable and other infectious diseases. Her interests include studying the burden of respiratory viruses in high-risk populations, assessing vaccine effectiveness, and estimating vaccine coverage. She has been supporting PHO’s COVID-19 Incident Management System since February 2020 with a focus on addressing questions to support the provincial response and inform decision-making. She has also contributed to analyses related to COVID-19 burden, transmission, variants of concern, immunization, and vaccine effectiveness. 

Pandemic Related Publications

Buchan SA, Tibebu S, Daneman N, Whelan M, Vanniyasingam T, Murti M, Brown KA. Increased household secondary attacks rates with Variant of Concern SARS-CoV-2 index cases. Clinical Infectious Diseases. 2021 Jun 9;ciab496. doi:10.1093/cid/ciab496. 

 Chung H, He S, Nasreen S, Sundaram ME, Buchan SA, Wilson SE, et al. 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 BMJ 2021; 374 :n1943 doi:10.1136/bmj.n1943 

 Paul LA, Daneman N, Schwartz KL, Science M, Brown KA, Whelan M, Chan E, Buchan SA. Association of Age and Pediatric Household Transmission of SARS-CoV-2 Infection. JAMA Pediatr. Published online August 16, 2021. doi:10.1001/jamapediatrics.2021.2770 

 Murti M, Achonu C, Smith BT, Brown KA, Kim JH, Johnson J, Ravindran S, Buchan SA. COVID-19 Workplace Outbreaks by Industry Sector and Their Associated Household Transmission, Ontario, Canada, January to June, 2020. Journal of Occupational and Environmental Medicine. 2021 Jul 1;63(7):574-580. doi:10.1097/JOM.0000000000002201. 

 Brown KA, Gubbay J, Hopkins J, Patel S, Buchan SA, Daneman N, Goneau LW. S-Gene Target Failure as a Marker of Variant B.1.1.7 Among SARS-CoV-2 Isolates in the Greater Toronto Area, December 2020 to March 2021. Journal of the American Medical Association. 2021 May 25;325(20):2115-2116.

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