Home International F.D.A. Analyses Find Johnson & Johnson Vaccine Works Well

F.D.A. Analyses Find Johnson & Johnson Vaccine Works Well



Asked about the shortfall on Wednesday, Jeffrey D. Zients, the White House coordinator of the pandemic response, said the Biden administration learned that Johnson & Johnson was behind on manufacturing and needed federal help for equipment and raw materials when it took office in January.

“It was disappointing when we arrived” he said, but “I think the progress is real.” Despite the delays, he said, “obviously the prospect of a potential third approved vaccine is very encouraging” because lack of supply remains the biggest obstacle to the nation’s vaccination effort.

Mr. Zients said if the new vaccine is authorized, roughly two million of the initial four million or so doses would be added to the shipments from Moderna and Pfizer to the United States next week. The remainder would go to federal vaccination programs at pharmacies and community health centers, he said.

Johnson & Johnson’s vaccine has a lower efficacy rate than the vaccines from Moderna and Pfizer-BioNTech, which are both around 95 percent.

But in South Africa, the Johnson & Johnson vaccine is so far the clear winner. Novavax’s shot had an efficacy of 49 percent in South Africa. And a small trial in South Africa of the AstraZeneca-Oxford vaccine found that it did not offer much protection at all. The negative results led the South African government to abandon its plan of giving a million doses of AstraZeneca vaccines to health care workers. Last week, the government started giving Johnson & Johnson’s vaccines instead, and has so far administered more than 32,000.

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