Florida has reported a new record in Covid infections, amid a surge in cases in southern US states that have allowed businesses to re-open in recent weeks. On Saturday, Florida reported more than 9,500 new cases, up from almost 9,000 on Friday, the previous record. The spike has led state officials to tighten restrictions on business again - as Texas also did on Friday. The official number of coronavirus infections across the US is expected to surpass 2.5 million over the weekend. More than 125,000 Covid-19 patients have died nationwide - more than in any other country. On Friday the leading government adviser on coronavirus, Dr Anthony Fauci, said the US had a "serious problem". Speaking at the first White House coronavirus task force briefing in two months, Dr Fauci said the current rises were due to regions "maybe opening a little bit too early" and to people themselves not following guidance. "People are infecting other people, and then ultimately you will infect someone who's vulnerable," he said. Also on Friday, Johns Hopkins University said there had been more than 40,000 new cases across the country - the second consecutive daily record. Health officials in the US estimate the true number of cases is likely to be 10 times higher than the official confirmed total.