Health challenges spotlight for California's population

The curated articles collectively highlight various health challenges faced by California, focusing on different infectious diseases affecting the state. Each article sheds light on specific locale-based outbreaks or health threats, such as tuberculosis, West Nile virus, plague, and kissing-bug disease. These articles explore public health responses, ongoing risks, and preventive measures.

A tuberculosis case at Cache Creek Casino in Yolo County prompts a public health alert. Health officials engage in contact tracing and urge those who may have come into close contact with the infected individual to seek medical advice. In Yolo County, the first human case of West Nile virus for the year was reported. This notifies residents to take precautions against mosquito bites, as it can lead to serious neurological illness for a small number of people infected. Additionally, an El Dorado County resident contracted plague after possibly being bitten by an infected flea while camping. The county health division emphasizes precautionary measures, as plague can be symptomatic and requires swift treatment. Lastly, researchers note that around 100,000 Californians might unknowingly have Chagas disease, transmitted by kissing bugs. While not a common concern historically in the U.S., evidence suggests awareness and surveillance need to improve in California as triatomine insects are present in parts of the state.

NO. 1: EL DORADO COUNTY RESIDENT TESTS POSITIVE FOR PLAGUE AFTER CAMPING IN TAHOE AREA

El Dorado County health officials on Tuesday announced that a South Lake Tahoe resident has tested positive for plague, a potentially life-threatening disease that occurs naturally in areas of the western United States. | Published August 20, 2025 | Read Full Story by Rosalio Ahumada

Microscopic photos shoe the Yersinia pestis bacterium, in yellow, which causes bubonic plague.

NO. 2: PLAGUE INFECTS CALIFORNIA RESIDENT. WHAT TO KNOW ABOUT ‘LIFE-THREATENING’ DISEASE

After a El Dorado County resident tested positive for the plague, Californians may be wondering about their risks of contracting the deadly disease. | Published August 21, 2025 | Read Full Story by Veronica Fernandez-Alvarado

Sacramento County health officials said Monday, Sept. 19, 2022, an Elk Grove High School student was diagnosed with tuberculosis and was isolating.

NO. 3: CONTAGIOUS TUBERCULOSIS CASE PROMPTS NOTICE AT NORTHERN CALIFORNIA CASINO

A case of contagious tuberculosis identified at a popular Northern California tribal casino has Yolo County health officials on alert. | Published August 7, 2025 | Read Full Story by Darrell Smith

NO. 4: ELK GROVE HIGH SCHOOL STUDENT TESTS POSITIVE FOR ACTIVE TUBERCULOSIS

An Elk Grove high school student tested positive for active tuberculosis, according to a Thursday news release from Sacramento County health officials and Elk Grove Unified School District. | Published August 15, 2025 | Read Full Story by Theresa Clift

Portrait of young black woman sneezing in to tissue at home. Sick african woman wrapped in blanket sitting on sofa blowing her nose at home. Ill girl sneezing with runny nose in winter. By Ridofranz

NO. 5: VALLEY FEVER CASES ARE ON THE RISE ACROSS CALIFORNIA. WHO IS MOST AT RISK?

Valley fever cases are on the rise across California, according to public health officials. | Published August 15, 2025 | Read Full Story by Angela Rodriguez

Culex Pipiens mosquitos collected by the Sacramento-Yolo Mosquito & Vector Control District at Seymour Park in Sacramento’s Pocket neighborhood wait to be tested on July 19, 2018. By Hector Amezcua

NO. 6: FIRST HUMAN WEST NILE VIRUS INFECTION CONFIRMED IN NORTHERN CALIFORNIA

Northern California’s first human West Nile virus case of the year has been confirmed in Butte County, according to local health officials. | Published August 15, 2025 | Read Full Story by Mathew Miranda

Dangerous Zika Infected Mosquito Skin Bite. Leishmaniasis, Encephalitis, Yellow Fever, Dengue, Malaria Disease, Mayaro or Zika Virus Infectious Culex Mosquito Parasite Insect Macro. By nechaev-kon

NO. 7: HIGHEST NUMBER OF WEST NILE CASES IN A DAY REPORTED IN THESE CALIFORNIA COUNTIES

West Nile virus activity is on the rise in some northern California counties, according to the Sacramento-Yolo Mosquito and Vector Control District. | Published August 15, 2025 | Read Full Story by Brooke Baitinger

The California Department of Public Health is observing increasing West Nile virus activity. The virus is carried by mosquitoes. Center for Disease Control By James Gathany

NO. 8: DAVIS RESIDENT HOSPITALIZED IN YOLO’S FIRST HUMAN WEST NILE INFECTION OF 2025

A Davis resident has been hospitalized with Yolo County’s first confirmed human case of West Nile virus this year, county health officials announced Thursday. | Published August 22, 2025 | Read Full Story by Daniel Hunt

NO. 9: PLACER PUBLIC HEALTH OFFICIALS CONFIRM FIRST HUMAN WEST NILE CASE OF 2025

Health authorities have confirmed the first human case of West Nile virus in Placer County this year, the 23rd human case in the state this year. | Published August 29, 2025 | Read Full Story by Darrell Smith

About 100,000 Californians could be infected with a potentially-deadly disease spread by kissing bugs — and not even know it.

NO. 10: WHAT’S THE KISSING-BUG DISEASE? 100,000 CALIFORNIANS COULD HAVE IT AND NOT KNOW

Several thousand Nearly 100,000 // Californians could have a deadly disease — and not even know about it until it erupts in serious cardiac and gastrointestinal issues, researchers say. | Published September 4, 2025 | Read Full Story by Brooke Baitinger

The summary above was drafted with the help of AI tools and edited by journalists in our News division. All stories listed were reported, written and edited by McClatchy journalists.