State health officials worry that declining vaccination rates have left many communities vulnerable nationwide.

County officials said anyone who visited a Starbucks on South Eagle Road in Newtown during certain hours on March 19 should monitor themselves for measles symptoms.

Kansas and Ohio health officials have confirmed several measles cases among mostly unvaccinated children and adults, as the total number of states reporting measles outbreaks reaches 18.

Most of the public school districts in the Kansas counties experiencing the outbreak have vaccination rates well below the recommended 95% threshold.