1-6-23 XBB.1.5, has quickly been spreading in the United States over the past few weeks. The Centers for Disease Control and Prevention estimated that it made up 72% of new cases in the Northeast and 27.6% of cases across the country. The earliest samples of XBB.1.5 were isolated in October in New York.

1-27-23 Only 15% of the population has received the bivalent booster shot, according to the latest CDC data. The FDA presented the idea of adopting a plan similar to the flu model moving forward. The plan recommends that most healthy people receive one dose every fall. Some Americans, including older people, unvaccinated young children and those who are immunocompromised, may need to be offered two or more doses a year, the agency said.