Published estimates of the risk of vaccine-induced thrombotic thrombocytopenia (VITT) from countries with moderate to high data quality range from 1 case per 26,500 to 1 case per 127,300 first doses of AstraZeneca/COVISHIELD administered (Table 1).
The risk of VITT in Canada as of May 8, 2021 has been estimated to be approximately 1 per 55,000 doses, but several presumptive cases are still under investigation.
Estimated at 1 in 55,000 doses but that will change. So much for that one in a million, eh?
Safe and effective? No. Screenshot of chart below (partial)
Only Norway has provided high quality, peer reviewed data. Canada's data is poor and it's clearly stated there that cases of VITT are underestimated- Notice the omission of data in the chart?