Moderna, Pfizer Preference Casts Shadow on World Vaccine Effort (1)

The U.S. decision to favor Covid-19 vaccines made by Pfizer Inc. and Moderna Inc. over Johnson & Johnson‘s vaccine could stymie global vaccination efforts that rely on similar technologies to J&J’s shot, vaccine scientists, scholars, and lawyers said.

Findings of rare but serious blood clots in J&J’s vaccine prompted the Centers for Disease Control and Prevention to recommend vaccines made by Moderna and Pfizer-BioNTech SE, following the advice of the agency’s scientific advisers. AstraZeneca’s vaccine, which isn’t authorized in the U.S. but has been distributed globally, has been linked to the rare clots as it uses the same platform ...