Earlier this week, the Los Angeles County Department of Public Health declared a hepatitis A outbreak after seeing a sustained increase in clinical cases of hepatitis A and elevated virus levels in local wastewater. At least 165 hepatitis A cases were confirmed in LA County since the beginning of 2024—3 times the number of cases reported in all of 2023. What’s concerning is that among the 29 hepatitis A cases confirmed to date in 2025, …
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