WHO says countries can now use one or two courses of the Janssen vaccine
Countries “can now consider” using one or two courses of the Janssen COVID-19 vaccine, otherwise known as the Johnson & Johnson, or J&J shot, the World Health Organization (WHO) announced on Friday. The one-dose schedule is already authorized under the Emergency Use Listing Procedure, the agency explained in their updated recommendations, but now a second dose “may be appropriate”, the UN health