New guidance now says those ages 18 to 64 in high-risk professional and institutional settings and those ages 18 to 49 with underlying health conditions may get a booster dose of Pfizer at least six months after their second shot, based on their individual benefits and risks.

The Republican-backed review of the 2020 presidential election in Maricopa County found that President Joe Biden won by 360 more votes than the official results certified last year.

Friday, the CDC released a new study co-authored by the Pima County Health Department stating that universal masking “considerably reduces the likelihood of a school-associated covid-19 outbreak.”

Pima County has reported two cases of the West Nile virus this year.

Watch KOLD News 13 at 6 p.m. Monday to hear from three southern Arizona students about their struggles during the pandemic.

The SWAT team was able to enter and detain him without any issues.

The Arizona Department of Corrections, Rehabilitation and Reentry is now allowing visitation rooms at 100% capacity.

Tucson Police are investigating a serious-injury collision on Starr Pass Blvd. and Mission Rd. on Friday, Sept. 24.

The cause of the fire in the 4400 block of West Pyracantha Drive is under investigation.

The immediate threat is to Lake Powell and its ability to generate hydropower.

A planned hunt of bison on the North Rim of Grand Canyon National Park this week appears to be moving forward, despite last-minute pleas by lawmakers in Colorado to move the animals there instead.

A study co-authored by Pima County found that universal mask-wearing “considerably reduces the likelihood of a school-associated COVID-19 outbreak.”