Canada’s drug and vaccine regulator stated on Friday that it was withholding the discharge of the nation’s first cargo of the Johnson & Johnson vaccine to confirm its security and high quality.

Health Canada, the regulator, stated on Tuesday that not one of the Johnson & Johnson vaccine, developed by the corporate’s Janssen subsidiary, had been made at an Emergent BioSolutions manufacturing unit in Baltimore which had discarded thousands and thousands of probably contaminated doses of AstraZeneca’s coronavirus vaccine.

But in a press release issued on Friday night, it stated that since then it has “learned that a drug substance produced at the Emergent site was used in the manufacturing of the initial Janssen vaccines.”

The regulator stated that it’s now working with Janssen and the Food and Drug Administration within the United States to make it possible for the vaccines meet Canada’s requirements for “quality, safety and efficacy.”

It didn’t establish what a part of the vaccine got here from Emergent past saying that it was an “active ingredient.” Nor did it establish the plant have been the vaccine was produced.

About 1.5 million doses of the AstraZeneca vaccine despatched to Canada by the Biden administration in early April were also produced at the Baltimore plant. Health Canada stated final week that its evaluate of that vaccine uncovered no issues or contamination.

Vaccine manufacturing on the plant has been suspended. Up to 15 million doses of the Johnson & Johnson vaccine made there have been thrown away as a result of contamination fears. Inspectors from the F.D.A. later discovered that Emergent didn’t absolutely examine the contamination and located issues with the manufacturing unit’s disinfection practices, it measurement and design, the way it dealt with uncooked supplies and educated its employees.

On Thursday, Emergent introduced that it had removed some of its senior managers. Robert Kramer, the chief government, acknowledged that the “loss of a batch for a viral contamination is extremely serious” however stated that he hoped manufacturing would begin once more in Baltimore quickly.

The F.D.A. had earlier paused shipments of the Johnson & Johnson vaccine because it regarded into uncommon blood clots amongst younger ladies who obtained the shot. That was lifted a week ago after a warning label in regards to the clotting problem was added.