Mick F wrote:.....This means that anything touched by an infected person would be rid of the virus so long as it's left in bright sunshine within a short while.
It was on the BBC only during the week just gone.
If you read the link I posted (a BBC website, rather than a possibly misremembered remark) amongst other things it says
Another study found that the longer flu particles were exposed to sunlight for – and the more concentrated it was – the less likely they were to remain infectious. Alas, the study looked at flu suspended in the air, rather than dried onto objects.
All this means that using sunlight to disinfect surfaces is extremely problematic.
First of all, no one knows how long it takes to deactivate Covid-19 with sunlight, or what strength is needed. And even if they did, the amount of UV in sunlight varies depending on the time of day, the weather, the season, and where in the world you live – especially which latitude – so this wouldn’t be a reliable way to kill the virus.
cheers