By the second month, all infants need to be vaccinated to help prevent common contagious diseases like diphtheria, polio and whooping cough.
(all infants; to be vaccinated; to help prevent common contagious diseases like diphtheria, polio and whooping cough) (all infants; need; to be vaccinated to help prevent common contagious diseases like diphtheria, polio and whooping cough; T:By the second month) Context(all infants need,List([21, 37))):(all infants; need to help; prevent common contagious diseases like diphtheria, polio and whooping cough)
all infants need,List([21, 37))
all infants all infants all infants
to be vaccinated need need to help
to help prevent common contagious diseases like diphtheria, polio and whooping cough
to be vaccinated to help prevent common contagious diseases like diphtheria, polio and whooping cough T:By the second month
prevent common contagious diseases like diphtheria, polio and whooping cough