No biological explanation to tie AstraZeneca vaccine to blood clots: Sharma

Mar 12, 2021 | 11:12 AM

OTTAWA — Health Canada’s chief medical adviser says there is no scientific explanation to suggest a link between the Oxford-AstraZeneca COVID-19 vaccine and blood clots.

Dr. Supriya Sharma says Health Canada has a “really low threshold” for adverse events that could trigger a pause on the use of a vaccine and wouldn’t hesitate to do so if something warranted it.

A few European countries halted use of AstraZeneca’s injection temporarily this week, and others suspended use of specific batches, after some adverse events, including blood clots, were reported following vaccination.

Health Canada says the vaccine remains safe and effective but will continue to monitor all adverse events.