What to know
CDC, the US Food and Drug Administration (FDA), and public health officials in several jurisdictions are investigating a multistate hepatitis A outbreak potentially linked to imported frozen clams. The outbreak investigation is ongoing. During July 2025 – May 2026, a foodborne hepatitis A outbreak has impacted people in three states: Minnesota, New York, and Pennsylvania.
When people got sick
The chart below shows when people got sick during this hepatitis A outbreak. The true number of sick people is likely higher than the number reported, since some people recover without medical care and are not tested for hepatitis A.
*n=30 for whom information was reported as of June 4, 2026.
Content Source:
Division of Viral Hepatitis