UV killed flu viruses and the sunlight helped patient vitamin D levels.
Yes, and what I just noticed in that photograph - which has very good quality despite its age - is that there is a good amount of snow on the ground (see background).
200 posted on 03/27/2020 6:59:31 AM PDT by daniel1212
( Trust the risen Lord Jesus to save you as a damned and destitute sinner + be baptized + follow Him)