The multistate measles outbreak in 2015 led pediatricians in Scottsdale, Ariz., to warn patients they might be exposed during office visits. The state’s medical associations oppose legislation that would make it easier for kids to opt out of school vaccinations.

The multistate measles outbreak in 2015 led pediatricians in Scottsdale, Ariz., to warn patients they might be exposed during office visits. The state’s medical associations oppose legislation that would make it easier for kids to opt out of school vaccinations.