San Francisco says Johnson & Johnson recipients can get extra dose of Covid vaccines

Recipients of the Johnson & Johnson vaccine in San Francisco will be allowed to request a 'supplemental' dose of the Pfizer or Moderna vaccines. San Francisco officials say decision was made after many residents were requesting to receive additional shots to boost immunity. Currently, the CDC does not recommend a person to mix and match vaccine types or receive additional doses. Johnson & Johnson vaccine is believed to be effective against all strains of COVID-19, including the Indian 'Delta' variant. CDC has said it is tracking instances of people receiving unauthorized COVID-19 vaccine boosters