The Ontario government is pausing the use of the Oxford-AstraZeneca COVID-19 vaccine in the province due to safety- and supply-related issues.

Dr. David Williams, Ontario’s chief medical officer of health, said the decision has been made out of an abundance of caution because of increased instances of an extremely rare and potentially fatal blood clotting disorder, vaccine-induced immune thrombotic thrombocytopenia (VITT), linked to the shot.

https://globalnews.ca/news/7852523/covid-astrazeneca-vaccine-ontario/

In Canada, at least 12 VITT cases have been confirmed out of more than two million doses given and three women have died. In Ontario as of May 8, there were eight VITT cases reported after approximately 901,800 Oxford-Astrazeneca doses were administered.

Dr. Jessica Hopkins, the chief health protection and emergency preparedness officer for Public Health Ontario, said officials “picked up a safety signal” when it comes to a slight uptick in cases of VITT.

“The vaccine safety system is really working in Ontario and Canada,” she said, reiterating the side effects are rare.

2nd rare blood clot linked to AstraZeneca COVID-19 vaccine confirmed in Hamilton, Ont.

The development came on the same day the Alberta government announced it was going to stop providing first doses of the vaccine.

Alberta Health spokesperson Tom McMillan said since there are no known future shipments of AstraZeneca at this time, a determination was made to utilize the remaining supply as second doses.

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