Use wechat to scan QR code < / P > < p > to share with friends and circle of friends_ blank" href=" https://news.163.com/news/search?keyword=%E5%BC%BA%E7%94%9F < A / target_ blank" href=" https://news.163.com/news/search?keyword=%E7%96%AB%E8%8B%97 "> vaccine < / a > is invalid. The times further pointed out that the factory is a production partner of Johnson & Johnson and AstraZeneca vaccines, and workers mix the ingredients of the two vaccines. < / P > < p > on March 31, local time, Johnson & Johnson global official website issued a statement saying that in the United States, emergent biosolutions has identified a batch of < a target = "products that do not meet the quality standards_ blank" href=" https://news.163.com/news/search?keyword=%E5%8E%9F%E6%96%99%E8%8D%AF "> API < / a >, the site has not authorized the production of raw materials for its new crown vaccine, and this batch of products has never entered the filling and finishing stage of the manufacturing process. < / P > < p > Johnson & Johnson stressed that this is a case occurred in the process of strict quality control of each batch of API. At present, the company has determined to work with emergent biosolutions to solve this problem and share information with the US Food and Drug Administration (FDA). < / P > < p > < p > Johnson & Johnson said in the statement that the company has fulfilled its commitment to provide sufficient single dose vaccine before the end of March, so that more than 20 million people in the United States can fully < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E6%8E%A5%E7%A7%8D "> vaccinated with < / a > vaccine. The company plans to provide 100 million single dose vaccines to the United States in the first half of 2021, with the goal of delivering them by the end of May. < / P > < p > according to the official website, emergent biosolutions is an American pharmaceutical company, whose main business includes cdmo (contract R & D and production). In July 2020, the company announced that it had signed a five-year contract with Johnson & Johnson to produce APIs for candidate vaccines against health incidents. < / P > < p > according to the New York Times, the accident was a "great embarrassment" for the single dose of J & J vaccine, which is expected to speed up the U.S. national immunization program.