Johnson & Johnson is asking the FDA to grant emergency use authorization for its coronavirus vaccine.
The healthcare giant submitted the request Thursday and health experts believe the vaccine could be approved by the end of February. If it gets the go ahead, Johnson & Johnson's would be the third COVID-19 vaccine available to the American public, following Pfizer and Moderna. The single-dose vaccine is reportedly about 66% effective in preventing the virus, and does not need to be kept in extreme cold storage.