Caroline Quach-Thanh OQ (born March 15, 1972) is a Canadian pediatric microbiologist, epidemiologist and infectious diseases specialist.

She is a professor in the Université de Montréal Faculty of Medicine[1] and Medical Lead in the Infection Prevention and Control Unit at CHU Sainte-Justine.

[2] She served as the Chair of the National Advisory Committee on Immunization (NACI) before and during the COVID-19 pandemic, and oversaw the development of usage guidelines for COVID-19 vaccines in Canada.

[3][4] Born March 15, 1972,[5] Caroline Quach-Thanh completed medical school in 1995, and a residency in pediatrics in 1998 at the University of Montréal.

She then pursued her post-doctoral studies in pediatric infections and microbiology (2002), the a Master's degree in Epidemiology (2003) at McGill University.

[17] In response to criticism and confusion following NACI’s recommendations (such as its changing guidance on the AstraZeneca product), she admitted that the council’s members were exhausted from the totality of their workload.

[34] The focus of her project, “from Hospital to Community”, is minimizing healthcare-associated infections as well as evaluating the risks and benefits of vaccine regimens.