Specifically “Both viruses exhibited exponential decay in virus titer across all experimental conditions”. See the graphs on the last page for different surface types.
I have seen one source indicating that specifically on copper, there was a delay of half an hour or so followed by a rapid decline. I have also seen another source indicating that the effectiveness of sunlight in shortening the halflife declines with time. Wish I could find them...
https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v2.full.pdf
Specifically “Both viruses exhibited exponential decay in virus titer across all experimental conditions”. See the graphs on the last page for different surface types.
I have seen one source indicating that specifically on copper, there was a delay of half an hour or so followed by a rapid decline. I have also seen another source indicating that the effectiveness of sunlight in shortening the halflife declines with time. Wish I could find them...