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That was one time, and those vaccines were on the cusp of expiring. https://globalnews.ca/news/7728936/astrazeneca-vaccine-doses-expiry-april-2/ https://global

• retrac 5y ago
  Biden has indicated that the Americans intend to continue supplying doses to Canada. Perhaps Mexico too. https://globalnews.ca/news/7777450/biden-covid-vaccine-canada-help/ https://globalnews.ca/news/7777450/biden-covid-vaccine-canad...
• gojomo 5y ago
  I've been wondering about the shelf life of that "loan", and while it's reasonable to surmise it was early batches with a limited life, it doesn't look like that article is specifically describing the US shipment as near-expiration. But: a bigger problem is that most came from the troubled Emergent Biosolutions plant, never FDA-certified, where all of its J&J production has been held back from US use: https://www.nytimes.com/2021/04/23/us/astrazeneca-covid-vaccine-contamination.html https://www.nytimes.com/2021/04/23/us/astrazeneca-covid-vacc...