Details on outbreaks around the country in the past 12 months with links to more information on each state. To see the information in a map view, please click here.

California | Colorado | Kentuckey | Massachusetts | Michigan | New York | Utah | Wisconsin

California

Other News Source Coverage:

Widespread Hepatitis A Outbreak in Homeless Population in US, December 27, 2025

San Diego Public Health Officials Urge Vaccinations Amid Rise in Hepatitis A and Mpox Cases, November 9, 2025

Hepatitis A outbreak declared in L.A. County. ‘We really have to get ahead of this’, May 5, 2025

Colorado

Other News Source Coverage:

Widespread Hepatitis A Outbreak in Homeless Population in US, December 27, 2025

Boulder restaurant’s patrons warned of potential Hepatitis A exposure by: Heather Willard, January 14, 2025

Kentucky

Other News Source Coverage:

Widespread Hepatitis A Outbreak in Homeless Population in US, December 27, 2025

Massachusetts

Other News Source Coverage:

Hepatitis Case at Restaurant Provokes Wide Alert, May 28, 2025

Michigan

Other News Source Coverage:

Widespread Hepatitis A Outbreak in Homeless Population in US, December 27, 2025

New York

Other News Source Coverage:

Hepatitis A Warning issued for Oceanside Jersey Mike’s Subs patrons, April 26, 2025

New York City Health Department Warns Patrons Of A Manhattan Restaurant of Possible Exposure To Hepatitis A, February 14, 2025

Utah

Other News Source Coverage:

BRHD says its investigating three Hepatitis A cases, January 28, 2026

Widespread Hepatitis A Outbreak in Homeless Population in US, December 27, 2025

Wisconsin

Other News Source Coverage:

UHS alerts students to possible hepatitis A exposures linked to Rheta’s dining hall, February 7, 2025

No Activity
The following states report no or very little activity:

  • Alaska
  • Arizona
  • Arkansas
  • Connecticut
  • Delaware
  • District of Columbia
  • Florida
  • Georgia
  • Hawaii
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Maine
  • Maryland
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Montana
  • Nebraska
  • Nevada
  • New Hampshire
  • New Jersey
  • New Mexico
  • North Carolina
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon
  • Pennsylvania
  • Rhode Island
  • South Carolina
  • South Dakota
  • Tennessee
  • Texas
  • Vermont
  • Virginia
  • Washington
  • West Virginia
  • Wyoming

Last updated January 29, 2026