WASHINGTON (AFP) - The United States' top pandemic adviser said on Sunday (March 14) that authorities were considering cutting social distancing rules to three feet (one metre), a move that would change a key tenet of the global fight against Covid-19.

Dr Anthony Fauci, a world-respected figure during the coronavirus crisis, said experts at the Centres for Disease Control (CDC) were examining a Massachusetts study that found "no substantial difference" in Covid-19 cases in schools observing six-foot and three-foot rules.