He said the coronavirus has "had very little impact on young people", although there seems to be a growing concern over cases of a mysterious inflammatory syndrome in young people that is thought to be related to the virus.
'There is a real risk that you will trigger an outbreak that you may not be able to control, Fauci said.
Fauci, a leading member of the White House's coronavirus task force, told U.S. lawmakers a day earlier that it would be "a bridge too far" to expect a vaccine or treatment to be available by fall to facilitate students returning to college campuses, reports Xinhua news agency. "You can look at numerous countries where I don't think those are right numbers".
The president has been blaming China and the World Health Organization for the spreading of Covid-19 through poor management and that had they acted quicker and been more open with the global community then we would not have a pandemic on our hands.
President Donald Trump listens as White House press secretary Kayleigh McEnany speaks with reporters on the South Lawn of the White House as he departs on Marine One, Thursday, May 14, 2020, in Washington.
"And regarding schools, he said: "...we don't know everything about this virus, and we really better be very careful particularly when it comes to children".
In his first appearance on Capitol Hill in two months, Anthony Fauci delivered a message of caution that was at odds with the rhetoric of President Donald Trump, who has pressed for rapid steps to rekindle the devastated economy. Schools typically wind down for the academic year in June, but having shut down in March, many institutions have said they will re-open only in September if the danger has passed. "We can't keep on going on this like".
Trump said the advice by Fauci was unacceptable. The President said that he doesn't consider the country to be open until all the schools and universities go back to work.
On Tuesday, Dr Anthony Fauci, the much admired clinical authorities, alerted legislators versus the noticeable threats of re-opening institutions in the fall, considered that a vaccination or comparable therapy would likely be not available prior to the brand-new academic year begins. At one point in early April, Trump appeared to be so fed up with reporters asking for Fauci's opinion on the untested treatment that he blocked him from answering a question during a news briefing.
On Tuesday, California State University, the country's largest four-year university system, announced that almost all on-campus classes would be canceled for the fall semester and would take place online instead.