US President Donald Trump has said researchers should try to apply their findings to coronavirus patients by inserting ultraviolet light or disinfectant into their bodies.
It comes as the number of Covid-19 cases in the US is approaching 900,000 with nearly 50,000 deaths from the virus, according to a Reuters tally.
The coronavirus appears to weaken more quickly when exposed to sunlight, heat and humidity, a US official said at a White House news briefing, in a potential sign that the pandemic could become less contagious in summer months.
Mr Trump asked: "Is there a way we can do something like that by injection, inside, or almost a cleaning?" "It would be interesting to check that." US government researchers have determined that the virus