J&J finds problem with COVID vaccine batch; NYTimes says 15 mln doses ruined Reuters | Published: 04.01.21 , 08:06 Johnson & Johnson said on Wednesday it had found a problem with a batch of the drug substance for its COVID-19 vaccine being produced by Emergent Biosolutions, and said the batch did not advance to the final fill-and-finish stage. J&J did not say how many vaccine doses the batch would have produced. The New York Times reported that about 15 million doses were ruined, without citing a source. The Times said that workers had conflated ingredients for the J&J vaccine and a coronavirus vaccine developed by AstraZeneca Plc, which is produced at the same plant, several weeks ago.