@trev33 said
Lets say sunlight does kill the virus, what does it change? Look at Spain, one of the sunniest countries in Europe but with one of the highest death rates, what does that tell us?
although per capita Belgium so far has a higher C19 death rate per capita than Spain
(see
https://www.statista.com/statistics/1104709/coronavirus-deaths-worldwide-per-million-inhabitants/
-it actually gives death rate per million people, not per capita but, obviously, that still allows us to compare per capita )
on the hand, the UK, which is less sunny than Spain, so far has a lower C19 death rate per capita.
So you have a point which is there appears to be no clear statistical evidence exactly where one would expect a lower death rate per capita if sunlight so readily quickly kills the virus and therefore this tells us that there is at least circumstantial evidence
against they hypothesis that sunlight very quickly kills the virus.
And although I still wouldn't rush to rule out the possibility just yet that sunlight quickly kills the virus (although logically sunlight must have at least SOME effect, the real question is whether that effect is enough to significantly reduce risk or is that effect very slight?), the fact that there doesn't appear to be noticeable evidence of this where one would generally expect to see noticeable evidence of this if sunlight quickly kills the virus means that is one thing the people pushing that theory need to explain first.
This is one of the reasons, not the only one, why I am very sceptical of the said scientific experiment that claims to prove sunlight can very quickly kill the virus. Full details of the methodology used in this said experiment really needs to be published first so the experts can scrutinize it. Obviously, if or when that happens and it passes such scrutiny and if or when the same results are then repeated independently in other labs and without contradiction in the results, I would accept the conclusion as correct.
In addition, even if sunlight IS later proven to quickly kill the virus, the fact that that sunlight quickly killing the virus has apparently somehow failed to slow the virus and thus reduce the death rate in the more sunny parts of the world implies sunlight would for some reason (what reason?) make little practical difference to the risk from the virus if sunlight was deliberately 'used' (exactly how?) as a weapon against the virus. If that is so then this whole thing is just academic.