(Photo courtesy University of Chicago Medicine)

Vax populi

The importance of measles immunization, by the numbers.

Percentage of unvaccinated people who become infected after their first exposure to measles, Allison Bartlett of the Comer Children’s Hospital infection control program told UChicago Medicine’s ScienceLife: 75

Before the 1967 introduction of the measles vaccine, the average number of annual deaths from the disease in the United States: 500

Percentage reduction of measles cases in the United States after the introduction of the vaccine: 99

Deaths per 1,000 US children infected with measles: 3

Current number of global cases per year, in millions, according to the Centers for Disease Control: 20