Fully vaccinated Americans may not need to get a COVID-19 vaccine booster shot, Dr. Anthony Fauci said on Friday in an interview on CBS’ “This Morning.” Fauci, who is head of the U.S. National Institute of Allergy and Infectious Diseases (NIAID), said that there was “some misunderstanding” about whether fully vaccinated people would need a booster shot six months after getting injected. “We are planning for the eventuality that we might need to boost people, we don’t know whether we will have to do it and when we will have to do it,” Fauci said. “There’s estimates well it may be here, it may be a little bit longer. The fact is we don’t know, but it would really be foolish not to plan for the possibility that we might have to boost people, but there’s no set rule now that says in six months or in a year we’re …