Health officials in Canada’s Ontario province have suspended use of the AstraZeneca/Vaxzevria Covid-19 vaccine, saying that escalating concerns over risks of blood clots merited a review amid increasing supplies of competing jabs.
The indefinite suspension takes effect immediately, Dr. David Williams, the province’s chief medical officer, told reporters on Tuesday. Public health officials are reviewing whether to allow residents who are awaiting their second AstraZeneca dose to complete their vaccination as planned.
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