Health officials in Navajo County in northern Arizona say they've confirmed four measles cases, which are the first cases of ...

Health officials in Arizona say there are four linked measles cases in Navajo County, marking the state's first outbreak this ...

The U.S. logged 122 more cases of measles last week — but only four of them in Texas — while the outbreaks in Pennsylvania ...

Four measles cases have been confirmed in unvaccinated individuals in Navajo County, Arizona, after international travel exposure.

For the first time this year, Arizona has cases of the measles. State and county officials said on Monday they have confirmed ...

Infectious disease experts are working to find people who may have been exposed to the measles after four cases were ...

Waning immunization rates mean Arizona schoolchildren are more vulnerable to vaccine-preventable diseases such as whooping ...

Arizona's kindergarten vaccination rates against measles, mumps and rubella are below the required 95% for herd immunity. Yet Republicans continue to look for new ways to weaken childhood vaccine ...