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Rachel V Thomas

Flea-borne Typhus Surging Across Los Angeles, Officials Urge For Precautions

The Los Angeles County Department of Public Health has issued a warning about a surge in cases of flea-borne typhus, a bacterial infection transmitted by infected fleas, which are often carried by animals such as rats and cats.

In 2025, 220 cases were identified — the highest-ever recorded — with nearly 9 out of 10 requiring hospitalization. 

While the disease needs more awareness and urgent prevention, the flea-borne typhus is treatable with antibiotics, especially when diagnosed early. 

“Flea-borne typhus can cause serious illness, but it is preventable with simple steps,” said Muntu Davis, Los Angeles County Health Officer, in an official statement.

“With cases at an all-time high and most requiring hospitalization, it’s critical that people take simple steps now, such as routinely using flea control on their pets, avoiding contact with stray animals, and preventing wildlife from living in or around their homes,” Davis said.

The officials noted that people are often exposed in and around their homes when infected fleas are carried indoors on pets or other animals. Fleas that spread typhus are commonly found on stray animals, rodents, and other wildlife such as opossums.

The statement said that cases have been reported across Los Angeles County, including three localized outbreaks investigated in 2025 in Central Los Angeles City, the City of Santa Monica, and the unincorporated neighborhood of Willowbrook in South LA County.

“This marks a continued rise from 187 cases in 2024 and reflects a sustained upward trend in recent years,” it added. 

Also read: <a href="https://www.healthandme.com/health-news/more-than-45-bacteria-in-eye-infections-drug-resistant-study-article-154027644" data-type="tilCustomLink">More Than 45% Bacteria In Eye Infections Drug-resistant: Study</a>

<h2>Flea-borne Typhus: Symptoms and Treatment</h2>

Typhus is an acute febrile bacterial infection caused by Rickettsia Typhi bacteria, which is spread by infected fleas.

Because animals carrying infected fleas often appear healthy, people may not realize they are at risk.

Pets that spend time outdoors can carry fleas into homes and expose household members. People can also become infected through bites or feces of infected fleas, lice, or mites.

However, the flea-borne typhus is not spread from person to person.

The three main types—Epidemic, Murine, and Scrub typhus—all share common symptoms like high fever, headache, and rash.

Other symptoms of flea-borne typhus can include 

<ul><li>body aches </li><li>muscle pain, </li><li>nausea,</li><li>vomiting.</li></ul> Symptoms typically appear within 1–2 weeks after becoming infected. People of all age groups are at high risk. Anyone experiencing these symptoms should seek medical care promptly, especially if they may have been exposed to fleas or animals.

"Some patients can develop severe illnesses in which multiple organ systems can be involved and really can result in death as well," said Medical Epidemiologist Dr. Aiman Halai with the Los Angeles County Department of Public Health, ABC7 reported.

Flea-borne typhus is treatable with antibiotics, and early diagnosis helps prevent severe illness and hospitalization.

The public health department in Los Angeles urged people to: 

<ul><li>Protect pets: Use flea control year-round </li><li>Avoid stray animals: Don’t feed or handle them </li><li>Keep wildlife out: Secure trash and block entry and hiding points.</li></ul>"Don't leave any pet food outside. Make sure the vegetation around our homes is trimmed, making sure there are no bulky items where these animals can hide or crawl spaces where rodents can live," said Halai.

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The Los Angeles County Department of Public Health has issued a warning about a surge in cases of flea-borne typhus, a bacterial infection transmitted by infected fleas, which are often carried by animals such as rats and cats. In 2025, 220 cases were identified — the highest-ever recorded — with nearly 9 out of 10 requiring hospitalization. While the disease needs more awareness and urgent prevention, the flea-borne typhus is treatable with antibiotics, especially when diagnosed early. “Flea-borne typhus can cause serious illness, but it is preventable with simple steps,” said Muntu Davis, Los Angeles County Health Officer, in an official statement. “With cases at an all-time high and most requiring hospitalization, it’s critical that people take simple steps now, such as routinely using flea control on their pets, avoiding contact with stray animals, and preventing wildlife from living in or around their homes,” Davis said. The officials noted that people are often exposed in and around their homes when infected fleas are carried indoors on pets or other animals. Fleas that spread typhus are commonly found on stray animals, rodents, and other wildlife such as opossums. The statement said that cases have been reported across Los Angeles County, including three localized outbreaks investigated in 2025 in Central Los Angeles City, the City of Santa Monica, and the unincorporated neighborhood of Willowbrook in South LA County. “This marks a continued rise from 187 cases in 2024 and reflects a sustained upward trend in recent years,” it added. Also read: More Than 45% Bacteria In Eye Infections Drug-resistant: StudyFlea-borne Typhus: Symptoms and Treatment Typhus is an acute febrile bacterial infection caused by Rickettsia Typhi bacteria, which is spread by infected fleas. Because animals carrying infected fleas often appear healthy, people may not realize they are at risk. Pets that spend time outdoors can carry fleas into homes and expose household members. People can also become infected through bites or feces of infected fleas, lice, or mites. However, the flea-borne typhus is not spread from person to person. The three main types—Epidemic, Murine, and Scrub typhus—all share common symptoms like high fever, headache, and rash. Other symptoms of flea-borne typhus can include body aches muscle pain, nausea,vomiting. Symptoms typically appear within 1–2 weeks after becoming infected. People of all age groups are at high risk. Anyone experiencing these symptoms should seek medical care promptly, especially if they may have been exposed to fleas or animals. "Some patients can develop severe illnesses in which multiple organ systems can be involved and really can result in death as well," said Medical Epidemiologist Dr. Aiman Halai with the Los Angeles County Department of Public Health, ABC7 reported. Flea-borne typhus is treatable with antibiotics, and early diagnosis helps prevent severe illness and hospitalization. The public health department in Los Angeles urged people to: Protect pets: Use flea control year-round Avoid stray animals: Don’t feed or handle them Keep wildlife out: Secure trash and block entry and hiding points."Don't leave any pet food outside. Make sure the vegetation around our homes is trimmed, making sure there are no bulky items where these animals can hide or crawl spaces where rodents can live," said Halai.

flea-borne typhus surging across los angeles, officials urge people to take precautions

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