Article content Thousands of doses of the AstraZeneca vaccine in Ontario may not be used due to problems with storage data. While about 16,500 doses have passed quality control scrutiny and either have been or will be shipped out to pharmacies, about 13,000 doses are still being reviewed. We apologize, but this video has failed to load. Try refreshing your browser, or Thousands of Ontario AstraZeneca doses at risk of waste due to storage issue Back to video The setback comes as the province tries to put about 55,000 doses of AstraZeneca into people’s arms before the vaccine expires at the end of May.