J&J's Covid-19 vaccine reviewed by EU regulator after blood clots

One of the cases following J&J vaccinations happened during a clinical trial.

The European Union’s drug regulator has started a review to assess blood clots in people who received Johnson & Johnson’s Covid-19 vaccine.
 
Four serious cases of unusual clots accompanied by low blood platelets, one of which was fatal, have emerged after immunisation with the J&J shot, the European Medicines Agency said Friday. The move turns the regulator’s scrutiny onto a second Covid shot, after AstraZeneca’s vaccine was possibly linked to a rare blood-clotting disorder.
 
J&J is working with regulators to assess data on the rare clots, and “at present, no clear causal relationship has been established” with the