The United States is projected to reach herd immunity against the virus from China by the end of summer or early fall, Dr. Anthony Fauci said on Wednesday, adding that people can begin to change their behaviors as more and more people get vaccinated. “We don’t want to get too hung up on reaching this, this end game of herd immunity, because every day that you put 2 million to 3 million vaccinations into people makes society be more and more protected. So you don’t have to wait until you get full herd immunity to get a really profound effect on what you could do,” said Fauci, the longtime director of the National Institute of Allergy and Infectious Diseases and a top adviser to President Joe Biden, during a White House COVID-19 briefing. Approximately 32.8 million Americans have received full COVID-19 vaccinations as of March 10, according to the Centers for …