J&J had pledged to provide 20 million doses of its vaccine to the US government by the end of March A batch of Johnson & Johnson’s COVID-19 vaccine failed quality standards and can’t be used, the drug giant said late Wednesday. The drugmaker didn’t say how many doses were lost, and it wasn’t clear how the problem would impact future deliveries. A vaccine ingredient made by Emergent BioSolutions — one of about 10 companies that Johnson & Johnson is using to speed up manufacturing of its recently approved vaccine — did not meet quality standards, J&J said. J&J said the Emergent BioSolutions factory involved had not yet been approved by the US Food and Drug Administration to make part of the vaccine. Emergent, which has been producing bulk drug substance at one of its factories in Baltimore, declined to comment. J&J had pledged to provide 20 million doses of its vaccine to the US government by the end of March, and 80 million more doses by the end of May. Its statement on the manufacturing problem said it was still planning to deliver 100 million doses by the end of June and was “aiming to deliver those doses by the end of May.” President Joe Biden has pledged to have enough vaccines for all US adults by the end of May. The US government has ordered enough two-dose shots from Pfizer and Moderna to vaccinate 200 million people to be delivered by late May, plus the 100 million shots from J&J. A federal official said Wednesday evening the administration’s goal can be met without additional J&J doses. A J&J spokesman said earlier Wednesday that J&J met the end-of-March goal, but did not respond to questions about whether the Emergent plant had been cleared by FDA. As of Wednesday, J&J had provided about 6.8 million doses, according to the US Centers for Disease Control and Prevention’s online vaccine tracker. Some additional doses may not yet have been recorded as delivered, and the CDC said Wednesday that another 11 million doses of the vaccine would be available for shipments starting on Thursday. It was not immediately clear where those 11 million doses originated, but Johnson & Johnson has been shipping finished vaccines from its factory in the Netherlands to the US The FDA said it was aware of the situation but referred questions to Johnson & Johnson. The problem with the vaccine batch was first reported by The New York Times.