>>8399800

>>8399904

Looks like infrared. Maybe to make the room virus free.

>>8399937

The light bulbs can be red.

But the explenation is given in the 2017 article. It is refection from hospital cars

Percentage of people who tested positive for corona virus between 2013 and 2018

https://www.vet.cornell.edu/animal-health-diagnostic-center/veterinary-support/disease-information/equine-enteric-coronavirus

>>8400253

Ah yea. I go look further for human stats.

According to a 2016 paper Corona viruses are endemic in the human populations, causing 15–30% of respiratory tract infections each year.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4369385/>>8400503