Viral hepatitis


We work to prevent the spread of viral hepatitis in Colorado, limit the progression and problems caused by viral hepatitis disease, and support policies and resources.

Centers for Disease Control and Prevention (CDC) and health departments around the country are monitoring reports of cases of children with hepatitis of unknown cause; investigators are examining a possible relationship to adenovirus. CDC has put out a call for cases of children <10 years old with hepatitis of unknown cause since October 2021. 

As of May 19, 2022, CDPHE has reported 13 cases that meet these criteria to CDC. Numbers will be updated weekly on Thursday.  

Case numbers are listed below according to the month in which patients first presented with liver disease. Case counts for all time periods may change as CDPHE identifies  more patients.

Date of presentation

Number of cases

November 2021


December 2021


January 2022


February 2022


March 2022


April 2022


May 2022



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