Six women who got J&J’s vaccine developed clots, and one died, out of more than seven million doses administered across the U.S., according to federal health officials. The specific adverse event hasn’t been reported by people who received the Pfizer and Moderna shots, the officials said.
Pfizer and Moderna executives declined the offer, saying their vaccines appeared safe, the people said. The pair also objected because they didn’t see the need to duplicate the efforts of regulators and companies already looking for blood-clot cases and investigating the cause, the people said. One company’s concern: The safety of the Pfizer and Moderna shots could be tarnished by association, some of the people said.
Only AstraZeneca, which had been buffeted by similar blood-clotting concerns for weeks, agreed, the people said.