nurse – n. a person who is trained to care for sick or injured people and who usually works in a hospital or doctor's office

burned out – phrasal verb. feeling very physically and emotionally tired after doing a difficult job for a long time

outbreak – n. the sudden appearance of an illness

positive – adj. in illness, a test that confirms the presence of the illness

isolation – n. the state of being in a place or situation that is separate from others

plead – v. to ask for something in a serious and emotional way

mask – n. a covering used to protect your face or cover your mouth