Vaccines are medicines that help protect (immunize) people against certain illnesses and serious infectious diseases.
(Vaccines; are; medicines that help protect (immunize) people against certain illnesses and serious infectious diseases) (medicines; help; protect (immunize) people against certain illnesses and serious infectious diseases) (medicines; protect; )
Vaccines medicines medicines
are help protect
medicines that help protect (immunize) people against certain illnesses and serious infectious diseases
protect (immunize) people against certain illnesses and serious infectious diseases