European Countries Suspend Use of AstraZeneca Shots Over Worries About Blood Clots March 11, 2021 +4 and there is no evidence of any causal link between the vaccine and blood clots. IFTTT Millions of people have received the vaccine without safety problems NYT NYT > Business NYTimes and there is no evidence of any causal link between the vaccine and blood clots. IFTTT Millions of people have received the vaccine without safety problems NYT NYT > Business NYTimes