It isn’t known what went wrong with the participant, or even where the person lives.
“We must respect this participant’s privacy.
StatNews says the J&J study, which began in September, has 60,000 participants.

This is the second vaccine trial that has been paused in its late stages in the United States.
Another vaccine program by AstraZeneca, which involves 30,000 participants, has been on hold since early September.
“Within that trial you’d expect a few pauses.

To me it’s reassuring that companies are acting responsibly and pausing when they need to.”
Anthony FaucitellsHealthline: ““Let’s assume that we get a reasonably effective vaccine.
