Sonora continues to have the second-highest number of measles cases of all of Mexico’s states, after only its neighboring ...

As super-contagious measles continues to spread and nears a six-year U.S. record, cases in its original epicenter of West ...

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

The four cases were confirmed in Navajo County. All four cases were people who were not immunized and had recently traveled ...

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

The Navajo County Public Health Services District (NCPHSD) and the Arizona Department of Health confirmed four cases of ...

Navajo County announced four cases of measles Monday, marking the first cases of the disease in Arizona for 2025.

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 ...

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