Hepatitis A outbreak declared in LA County

LA County declares Hepatitis A outbreak

Last year, 165 cases were identified; there have been 29 to date this year. Typically, the county sees 30 to 50 cases a year.

LOS ANGELES - The Los Angeles County Department of Public Health has declared a community-wide outbreak of hepatitis A due to a significant increase in cases and elevated virus levels in local wastewater. 

What we know:

In 2024, LA County reported 165 hepatitis A cases, three times the number from 2023.  

In 2025, 29 cases have been confirmed, mostly among individuals without travel or housing risk factors. 

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The increase in cases correlates with higher hepatitis A concentrations in wastewater. 

What they're saying:

Dr. Muntu Davis, Los Angeles County Health Officer, stated, "The ongoing increase in hepatitis A cases signals that quick action is needed to protect public health. The hepatitis A vaccine is safe, effective, and offers long-term protection." 

Residents are urged to get vaccinated and practice regular handwashing, especially before eating and after using the bathroom.

What's next:

Public Health is actively monitoring and investigating suspect cases, collaborating with healthcare providers and organizations serving the homeless to promote vaccination and awareness. 

Free hepatitis A vaccines are offered through mobile units to those experiencing homelessness. 

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Residents are encouraged to check their vaccination status and seek vaccination if unvaccinated or at high risk.

About Hepatitis A:

Hepatitis A is a contagious liver infection caused by the hepatitis A virus, with symptoms ranging from mild to severe.

It spreads through ingestion of contaminated objects, food, or drinks. 

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Vaccination is the best preventive measure, and immune globulin may be recommended for certain individuals after exposure. 

For more information, residents can contact the Public Health InfoLine at 1-833-540-0473.