Children with Hepatitis of Unknown Cause

CDC is investigating hepatitis of unknown origin in children; some of these cases tested positive for adenovirus. Investigators are still learning more about the cause.

Learn More about the Investigation

Common Ways to Get Adenoviruses

Adenoviruses usually spread from infected people to others through

  • close personal contact such as touching or shaking hands
  • the air by coughing and sneezing
  • touching objects or surfaces with adenoviruses on them then touching your mouth, nose, or eyes
Adenovirus factsheet cover

Adenoviruses are common viruses that typically cause mild cold- or flu-like illness. Adenoviruses can cause illness in people of all ages any time of year.

Protect Yourself and Others

You can protect yourself and others from adenovirus infection:

  • wash your hands often with soap and water for 20 seconds
  • avoid touching your eyes, nose, and mouth with unwashed hands
  • avoid close contact with people who are sick
  • stay home when you are sick
  • cough and sneeze into a tissue or your upper sleeve, not your hands
  • avoid sharing cups and eating utensils with others
Page last reviewed: August 28, 2019