adult
anesthetic
antibodies
arm
asian
background
care
caucasian
clinic
closeup
cutout
doctor
dose
female
flu
glove
hand
health
hospital
illness
immunity
influenza
injecting
injection
instrument
label
medic
medical
medicine
needle
nurse
patient
people
pharmaceutical
physician
polio
professional
protection
sterile
syringe
tag
tetanus
tuberculosis
vaccination
vaccine
white
woman
women
worker