How Worrisome Are the J&J Vaccine Risks?
A rare but serious blood-clotting side effect prompted U.S. health officials to call for a pause in the use of J&J’s one-shot Covid-19 vaccine. Here’s what we know.
Safety concerns deliver a setback to a vaccine seen as a game changer in the Covid-19 fight.
Photographer: Ben Stansall/AFP via Getty Images
Sam Fazeli, a Bloomberg Opinion contributor who covers the pharmaceutical industry for Bloomberg Intelligence, answers questions about Johnson & Johnson’s Covid-19 vaccine after U.S. health officials recommended pausing use of the shot amid concerns that it may trigger rare but potentially deadly blood clots. The conversation has been edited and condensed.
U.S. officials recommended the pause after six women who received it developed this blood-clot condition. How serious is this?