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Herd immunity, explained

Feb 10, 2015
Vaccination only works if most of the population has been inoculated.
Miami Children's Hospital pediatrician Dr. Amanda Porro, M.D prepares to administer a measles vaccination to Sophie Barquin,4, as her mother Gabrielle Barquin holds her during a visit to the Miami Children's Hospital.
Joe Raedle/Getty Images

The cost of not vaccinating

Feb 10, 2015
It may be time for a new cost-benefit analysis when it comes to vaccination.

Immunization cuts proposed amid measles outbreak

Feb 6, 2015
Federal program that supplies vaccines to uninsured could be cut by $50 million.