2019 State of the ImmUnion
“Vaccines protect both the individuals vaccinated and those around them from dangerous diseases (a concept known as “community protection,” “community immunity” or “herd immunity”). That’s because most vaccine-preventable diseases are transmitted from person to person. If a high proportion of the population is vaccinated and immune to a disease then the chains of transmission are broken…. read more here: 2019 State of the ImmUnion: A Report on Vaccine-Preventable Diseases in the U.S.