Study finds evidence of ‘considerable’ presymptomatic spread of monkeypox

Research could help explain how virus got so out of control this year, while also refining efforts to combat it

British researchers have identified evidence of considerable" transmission of monkeypox in the few days before symptoms of the virus emerge.

If replicated, the finding would upend received wisdom about how the virus spreads. It could help explain how monkeypox, which causes sometimes excruciatingly painful lesions, got so out of control this year, while also refining efforts to combat it.