Recent Typhus Outbreaks Hit Santa Monica and Central Los Angeles
Los Angeles County recorded a record 220 cases of flea-borne typhus in 2025. Nearly nine in ten of those infected required hospitalization.
Case totals and trend
The 2025 total marks an increase from 187 cases reported in 2024. Health officials say the rise continues a multi-year upward trend across the region.
Victims ranged in age from 1 to 85 years. Officials emphasize that all age groups remain at risk.
Where outbreaks were investigated
Recent Typhus Outbreaks Hit Santa Monica and Central Los Angeles, according to county investigators. Officials also probed a cluster in Willowbrook in South Los Angeles.
Cases were reported across multiple neighborhoods, not confined to a single area.
How the disease spreads
Flea-borne typhus is caused by the bacterium Rickettsia typhi. Infected fleas transmit the bacteria to humans.
Fleas commonly live on rats, opossums, and stray cats. Those animals can bring fleas into homes and yards.
Typical route of infection
- Infection often results when flea waste, known as “flea dirt,” enters a bite, scratch, or the eyes.
- The disease is not spread from person to person.
- Symptoms usually appear within one to two weeks after exposure.
Symptoms and severity
- High fever and chills
- Severe headache
- Body aches and muscle pain
- Nausea or vomiting
- A distinctive rash
The county reported that a large share of cases required hospital care. Officials warn that symptoms should be evaluated promptly by a clinician.
Public health advice
Los Angeles County Health Officer Muntu Davis, MD, MPH, urged residents to take practical steps now. He recommended routine flea control for pets and avoiding contact with stray animals.
Officials also stressed preventing wildlife from nesting near homes and securing properties against rodents.
Practical prevention steps
- Use year-round flea treatment on pets.
- Keep pets indoors when possible.
- Apply EPA-registered insect repellents as directed.
- Seal trash cans and remove yard debris to reduce rodent habitat.
- Close off crawl spaces and other areas where wildlife can nest.
Anyone who develops symptoms after potential exposure should seek medical care right away. Additional prevention resources are available at Filmogaz.com.
