"COVID Vaccine Updates: Challenges and Availability for Americans"

Over 7 million Americans have received the updated COVID-19 vaccines from Moderna or Pfizer and BioNTech, targeting the XBB.1.5 Omicron subvariant. Distribution of the vaccines began in September, and millions of doses of another updated vaccine from Novavax have also been made available. Despite reports of difficulties in booking appointments or finding shots at no cost, U.S. public health officials remain optimistic and recommend that everyone aged 6 months and older receive the new vaccines.