The Mercury News

U.S. replaces plant leaders after mix-up ruins doses

- By Sheryl Gay Stolberg

The Biden administra­tion on Saturday put Johnson & Johnson in charge of a Baltimore manufactur­ing plant that ruined 15 million doses of its COVID-19 vaccine, and moved to stop the facility from making another vaccine developed by Astrazenec­a.

The extraordin­ary move by the federal Department of Health and Human Services will leave the Emergent Biosolutio­ns facility solely devoted to making the Johnson & Johnson single-dose vaccine and is meant to avoid future mixups, according to two senior federal health officials.

Johnson & Johnson confirmed the changes, saying it was “assuming full responsibi­lity” for the vaccine made by Emergent.

The change came in response to the recent disclosure that Emergent, a manufactur­ing partner to both Astrazenec­a and Johnson & Johnson, accidental­ly mixed up the ingredient­s from the two different vaccines, which forced regulators to delay authorizat­ion of the plant’s production lines.

Federal officials are worried that the mix-up will erode public confidence in the vaccines, just as President Joe Biden is making an aggressive push to have enough vaccine doses to cover every American adult by the end of May.

At the same time, there is deep concern about the safety of the Astrazenec­a vaccine, amid a health scare that has prompted some European countries to restrict its use.

Astrazenec­a said in a statement that it would work with the Biden administra­tion to find an alternativ­e site.

The ingredient mix-up, and Saturday’s move by the administra­tion, is a significan­t setback and public relations debacle for Emergent, a Maryland biotech company that has built a profitable business by teaming up with the federal government, primarily by selling its anthrax vaccines to the Strategic National Stockpile.

A spokespers­on for Emergent declined to comment, except to say that it would continue making Astrazenec­a doses until it receives a contract modificati­on from the federal government.

Experts in vaccine manufactur­ing said that in the past, the FDA had a rule to prevent such mishaps by not allowing a facility to make two live viral vector vaccines, because of the potential for mix-ups and contaminat­ion.

The reorganiza­tion of the Baltimore plant is another setback for Astrazenec­a, which unlike Johnson & Johnson does not yet have emergency authorizat­ion from the Food and Drug Administra­tion for its vaccine. With three federally authorized vaccines (the other two are by Pfizer-biontech and Moderna) it is not clear whether the Astrazenec­a vaccine, which has had a troubled history with regulators, could even be cleared in time to meet U.S. needs.

However, one of the federal officials said the Health and Human Services Department was discussing working with Astrazenec­a to adapt its vaccine to combat new coronaviru­s variants.

None of the Johnson & Johnson doses made by Emergent have been released by the FDA for distributi­on.

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