Norovirus cases rising across Los Angeles County, health department says

Wednesday, December 17, 2025 -Los Angeles County health officials are reporting a significant uptick in norovirus cases, warning residents of increased risk as the highly contagious stomach virus spreads through schools, workplaces, and public venues. 

The surge has prompted heightened public health alerts and recommendations for rigorous hygiene practices, including frequent handwashing and disinfecting high-touch surfaces.

Experts emphasize that norovirus can spread rapidly in crowded settings and can cause severe gastrointestinal illness, particularly among children, the elderly, and immunocompromised individuals. 

Hospitals and clinics are preparing for a potential influx of patients while reinforcing protocols to prevent further transmission. Community education campaigns are also being ramped up to inform the public about early symptoms and preventive measures.

For residents and businesses, the rise in cases underscores the importance of proactive hygiene and vigilance. Swift action, such as isolating symptomatic individuals and adhering to health guidance, can curb outbreaks and protect vulnerable populations. 

The current spike highlights the ongoing challenge of controlling contagious illnesses in densely populated urban areas and the critical role of coordinated public health responses.