It’s not actually crossing the border that’s the issue, but stories like this got a lot of attention in Canada: https://ottawa.ctvnews.ca/canadians-who-received-astrazeneca...
(although the theatre has since reversed their stance)
(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.