Three senior officials guiding the U.S. response to the coronavirus pandemic were in self-quarantine on Saturday after coming into contact with someone who had tested positive for the disease, their agencies and spokesmen said. Anthony Fauci, a high-profile member of the White House coronavirus response team, is considered to be at relatively low risk based on the degree of his exposure, according to a representative for the National Institute of Allergy and Infectious Diseases. Fauci, the 79-year-old director of that institute, has tested negative for COVID-19 and he will continue to be tested regularly, the official said in an emailed statement. Robert Redfield, director of the Centers for Disease Control and Prevention (CDC), “will be teleworking for the next two weeks” after a “low-risk exposure” on Wednesday to a person at the White House who has the disease, the CDC said in a statement. U.S. Food and Drug Administration (FDA) Commissioner Stephen Hahn, who is 60, is also in self-quarantine for a couple of weeks after coming into contact with someone who tested positive for the illness, an FDA spokesman told Reuters late on Friday.