Johnson & Johnson said blood clots have been reported with all Covid-19 vaccines. The author of the study they cited says they're wrong.

When news broke that Johnson & Johnson's Covid-19 vaccine might be linked to blood clots, the company responded by pointing a finger at Pfizer and Moderna's vaccines, issuing a media statement that said a study showed there were reports of blood clots with their vaccines as well. But the study doesn't show that at all, according to the lead author. 'We didn't find anyone with blood clots,' Dr. Eun-Ju Lee, an assistant professor of medicine at Weill Cornell Medical College, said of her study of Moderna and Pfizer's vaccines. 'We didn't find any of those scary things that are happening with Johnson & Johnson.'