19
adults
antiseptic
back to school
bottle
caucasian
cleansing
college
corona
corridor
covid
covid 19
covid19
disinfecting
distance
education
face mask
females
group
hallway
hands
hygiene
illness
indoors
inside
learning
males
man
multiethnic
pandemic
people
prevention
protection
reopening
safe
safe distance
school
spray
studying
university
virus
walking
woman
young
youth