The U.S. hasn’t OK’d boosters for those who got the J&J vaccine. But some are getting one anyway.

He read about a study that suggested the one-dose J&J vaccine might be less effective in fending off coronavirus variants than two-dose mRNA shots. He was especially troubled by one of the findings: the one-dose AstraZeneca vaccine, which is similar to the J&J shot, showed only about 33 percent efficacy against symptomatic disease caused by delta. What if he was vulnerable?

So, on the morning of July 22, he walked into a local CVS pharmacy and got another injection. No big deal, he recalled.

Dinan is part of a group of people in the U.S. who have sought out additional doses of Covid vaccines after getting the J&J shot, essentially mixing and matching shots from different companies. In recent weeks, people have said on social media that they even misled vaccine providers, claiming they were not inoculated so they would be eligible for another injection.

The use of boosters is more common in Canada and some European countries. Germany’s government has said Chancellor Angela Merkel got a Moderna shot in June after getting one from AstraZeneca in April. Israel has started giving a third shot to certain vulnerable people.

NBC The U.S. hasn’t OK’d boosters for those who got the J&J vaccine. But some are getting one anyway.

How many of these human guinea pigs were warned about ADE, or about many other negative side effects, in the short, medium and longer term? NONE?