Even as the US reported a record daily COVID-19 cases on Thursday, highest in the world so far, the government's top official in charge of Coronavirus testing urged Americans not to get retested to confirm they've recovered. According to Johns Hopkins University, 77,300 new cases were registered in 24 hours on Thursday. The previous high in the country was recorded last Friday at 67,800 cases.

Assistant Secretary for Health Admiral Brett Giroir said on Thursday that repeat testing is not necessary for most people who are infected but remain at home. He said such testing is "clogging up the system." US health officials will soon issue guidelines explicitly recommending against the practice, except for patients in the most severe cases.