It's A Specific Question.

Too specific for Google apparently.

http://www.xinhuanet.com/english/europe/2021-03/12/c_139804961.htm

But what size are the batches AstraZeneca shipping out?

If it's the same as Pfizer, around 1000 doses. Then 30 adverse clotting events from the same batch. That sounds really bad.

Meaning that batch, at least, is going straight in the bin.