Because no one in Canada wants to get vaccinated with it or maybe because US is not recognizing it, so you cannot cross the border even if you are vaccinated with AZ…
https://www.cbc.ca/news/politics/trudeau-astrazeneca-travell...
It would make sense to publish the real world data for all these vaccine, but it would have a bad influence on vaccination. I hope data will be published in the future.
AZ should at least get some sort of certification from the FDA that it offers an adequate immune protection. Might still be unsafe to administer to the American public but good enough to allow in.
(although the theatre has since reversed their stance)
Pragmatically speaking, it’s the only vaccine (that Canada has access to) that can be stored and transported in a regular fridge. Logistically it’s the best choice for donating to poorer, undeveloped countries.
Sure, it’s slightly higher risk than the others, but it’s a thousand times better than nothing.
On a personal note, my 69 year old mother got it and had no problems. The odds of developing problems are astronomically low.
They were available at the same time.
7 clots in 20 million vaccinated which is below background levels.
Logistically it’s the best choice for donating to poorer, undeveloped countries.