Study w/Results of nurses and people wearing cloth masks at higher risk for FLI (Flu Like Illnesses)
Psychological Effects of Masked Society:
American Association of Physicians Studies:
https://aapsonline.org/mask-facts/
Additional Links:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/ (Thanks joe_bidens_nostrils)
Added to the OP; thanks!
They will be defending the vaccines too when Trump says its okay.