Explained: Child dies of measles in Wisconsin's first such death since 1990

An infant in southwestern Wisconsin died after contracting measles

Coroner

An official who investigates and determines the cause of deaths

CDC

Centers for Disease Control and Prevention, the U.S. federal public health agency

Vaccine-preventable disease

An illness that can be avoided through vaccination

95% coverage

The vaccination rate threshold needed to prevent measles outbreaks in a population