ATLANTA (CBS19 NEWS) -- The Centers for Disease Control and Prevention is continuing to investigate cases of children suffering from acute hepatitis of unknown cause.

The CDC is working with health departments and clinicians across the country, including Virginia.

According to a release, 36 states and territories have reported 180 pediatric patients that are under investigation in the past seven months. On May 5, there had been 109 publicly reported cases.

The CDC says that while this may appear like a large increase in the number of patients under investigation, it says that people need to understand that most of these cases are considered “retrospective” patients.

The CDC’s investigation is looking at patients reported since October 2021.

Most of the numbers involve patients that are just now being reported, not new cases of hepatitis.

The release says this means not all of the cases being investigated are recent and some may not be linked to this investigation after officials look into them.

Additionally, the CDC says there have been no deaths reported since February, and the proportion of patients who needed liver transplants has dropped from 15 percent to nine percent since May 5.

Investigations into possible causes are underway, including testing for and ruling out some of the viruses that may cause hepatitis.

The release says adenovirus has been detected in nearly half of the children under investigation, and further lab testing is being conducted to look closely at the virus’ genome. Officials are also considering other potential pathogens.

The CDC is staying in touch with medical groups and providing updated guidance for clinicians who may have identified hepatitis of an unknown cause in children.

While severe cases of hepatitis in children are rare, parents and caregivers are encouraged to be aware of potential symptoms of it, especially jaundice or yellowing of the skin or eyes.

For more information regarding this investigation, click here.