Governance Organization

SMH – St. Michael’s Hospital Medical Services Association

Project Title

SMH-21-002 – Association between ABO blood type and coronavirus illness or SARS: case-control study

Project Highlights

With the funds provided, we have generated 5 related papers. Each has been peer reviewed and published. The first
listed paper created widespread media attention.

1) Ray JG, Schull MJ, Vermeulen MJ, Park AL. Association Between ABO and Rh Blood Groups and SARS-CoV-2
Infection or Severe COVID-19 Illness : A Population-Based Cohort Study. Ann Intern Med. 2021 Mar;174(3):308-315.
doi: 10.7326/M20-4511. Epub 2020 Nov 24. PMID: 33226859; PMCID: PMC7711653.

2) Ray JG, Colacci M, Schull MJ, Vermeulen MJ, Park AL. Non-ABO red cell antibodies and risk of COVID-19. Int J
Infect Dis. 2021 Jul;108:179-182. doi: 10.1016/j.ijid.2021.05.038. Epub 2021 May 19. PMID: 34022334; PMCID:

3) Ray JG, Vermeulen MJ, Schull MJ, Park AL. ABO Blood Group, SARS-CoV-2 Infection, and Risk of Venous
Thromboembolism: Population-Based Cohort Study. Clin Appl Thromb Hemost. 2021 Jan-Dec;
27:10760296211008986. doi: 10.1177/10760296211008986. PMID: 33827287; PMCID: PMC8040562.

4) Ray JG, Warkentin TE, Park AL. Heparin induced thrombocytopenia in relation to SARS-CoV-2 infection and ABO
blood group. Thromb Res. 2021 Sep 17;207:62-65. doi: 10.1016/j.thromres.2021.09.008. Epub ahead of print. PMID:
34555698; PMCID: PMC8445761.

5) Butler EA, Cohen E, Berger H, Ray JG. Change in Pre-Pregnancy Body Mass Index in Relation to COVID-19
Pandemic. J Obstet Gynaecol Can. 2021 Nov 5:S1701-2163(21)00750-7. doi: 10.1016/j.jogc.2021.09.014. Epub
ahead of print. PMID: 34750062; PMCID: PMC8570432


Public Health Measures and Society

Primary Project Lead for Contact

Joel Ray


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