Vaccine Update
Vaccination exemptions: Implications of decline in vaccination rates
Jillian L. Descourouez, PharmD, BCPS; Mary S. Hayney, PharmD, MPH, FCCP, BCPS
J Am Pharm Assoc (2003) 2013;53:324-326. doi:10.1331/JAPhA.2013.13516


Vaccines protect individuals to whom they are administered. Unlike other medical interventions, many vaccines also protect people around the immunized individual. Herd protection is defined as the resistance of a group to a disease as a result of the immunity of a large proportion of group members and the consequent lessening of the likelihood of an infected individual coming into contact with a susceptible individual. +1 Because herd protection depends on high immunization rates in a population, any threat to these high rates must be considered carefully.
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