Mandatory Credit: Photo by Robin Utrecht/Shutterstock (11853716e) The American regulator of medicines (FDA) recommends that the corona vaccine of the Leiden pharmaceutical company Janssen be allowed on the American market. Exterior of Janssen's office in Leiden. The American pharmaceutical company Johnson & Johnson has applied for accelerated approval in the United States for the vaccine produced by the Leiden subsidiary Janssen Vaccines. Covid-19 vaccines, Leiden, Netherlands - 11 Apr 2021