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The Food and Drug Administration released 10 million doses of the Johnson & Johnson Covid-19 vaccine produced by Emergent BioSolutions Inc., according to people familiar with the matter.

After a thorough review of a troubled Emergent manufacturing facility, U.S. regulators authorized two batches of the vaccine’s underlying drug substance made at the site, the FDA said in a statement Friday without disclosing how many doses would be released.

The agency said it wasn’t yet ready to provide full clearance to Emergent’s Baltimore-based manufacturing facility. The contract manufacturer has said it has made more than 100 million doses worth of the vaccine’s bulk drug substance. For months, that supply has been in limbo after Emergent staff accidentally contaminated millions of doses, leading to scrutiny of its manufacturing practices.

A representative for J&J declined to comment.

The 10 million Emergent-made doses expected to be released have already gone through the final stages of the fill-finish process. Between 5 and 6 million of the doses are owned by the U.S. government, and 3 to 4 million are owned by J&J, according to one of the people. But it’s not clear how many of the doses will be needed domestically.

Vaccination Slowing

Immunizations have been slowing in the U.S., with more than half of all American adults fully vaccinated, according to the Centers for Disease Control and Prevention. Many pharmacies, hospitals and health systems have more J&J supply on hand than they’ve been able to deploy as demand wanes.

The single-shot, refrigerator-stored J&J vaccine had been expected to boost the U.S. immunization drive, but output woes and a pause in dosing over safety concerns have limited its reach. It has accounted for 11.3 million of the 306 million vaccine doses administered in the U.S. through Tuesday.

Should U.S. regulators ultimately authorize the Emergent facility to release additional doses, J&J could soon play a larger role in the global immunization campaign. President Joe Biden’s administration has come under pressure to share its excess vaccines with low-and-middle income countries in need of supply.

The New York Times reported, citing unidentified people familiar with the situation, that about 60 million doses produced at the Emergent facility must be discarded because of possible contamination, and that the 10 million doses being released would carry a warning that regulators can’t guarantee Emergent followed good manufacturing practices.

Emergent has faced a long road in search of an authorization. In early March, J&J discovered a batch of drug substance made at the Emergent facility had been contaminated. Further testing and investigation found that Emergent staff mixed up ingredients for the J&J vaccine and another manufactured by AstraZeneca Plc.

The error led the site to discard 15 million doses worth of an ingredient for the J&J shot. The AstraZeneca vaccine hasn’t been cleared by U.S. regulators.

J&J said on April 3 that it would assume responsibility for making the drug substance at the plant. The Biden administration said at the time it would help install a new leadership team at the facility and asked Emergent to stop making AstraZeneca’s vaccine.

However, the FDA on April 16 asked Emergent to stop making any new materials and to quarantine the doses it had made. An agency inspection report found the company had failed to maintain a sanitary facility and that it wasn’t sufficiently on guard against mix-ups between the J&J and AstraZeneca vaccines.

Unprecedented Steps

At a congressional hearing in late May, Emergent Chief Executive Officer Robert Kramer said the U.S. government directed the company to take unprecedented steps to ramp up production of two vaccines in a single facility, even though the site wasn’t fully staffed or operating at scale.

Emergent began making AstraZeneca’s bulk drug substance in the third quarter of last year, and J&J’s in the fourth quarter. Kramer described the ingredient mix-up as a setback and said Emergent could produce 1 billion vaccines this year.

However, Democrats on the House Committee on Oversight and Reform and the Select Subcommittee on the Coronavirus Crisis said that Emergent had failed to maintain rigorous quality standards.

The lawmakers pointed to two FDA inspections from June 2020, saying in a report that the company was warned that employees needed extensive training and that it had deficient virus contamination control.

Emergent said in response to the FDA’s findings that it would improve sanitation and better train its workers.

This story has been published from a wire agency feed without modifications to the text.

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