Loading the player... White House officials in a Sunday evening call with reporters emphasized that there are now three highly-effective COVID-19 vaccines available across the country. The latest is the one-shot dosage from Johnson & Johnson with an initial distribution of 3.9 million — which is, for now, their entire inventory of the vaccine. Johnson & Johnson shows vials of the Janssen COVID-19 vaccine in the United States. (Johnson & Johnson via AP) Sixteen million more J&J vaccines will be delivered across the month of March, making it 20 million distributed by the end of the month. Johnson & Johnson’s vaccine is ready for use with delivery starting Tuesday to get them in the arms of Americans.