• The CDC says cases of the pediatric hepatitis spreading through Europe are now being investigated in 24 US states and Puerto Rico.
  • At least 5 kids in the US are dead and 109 have been sickened.
  • Most of the children who've contracted it also have an adenovirus infection.

The mysterious outbreak of pediatric hepatitis in very little kids has turned deadly in the US, the Centers for Disease Control and Prevention confirmed on Friday. 

Dr. Jay Butler, deputy director for infectious diseases at the CDC, told reporters on a call that the agency is investigating 109 unusual hepatitis cases across 24 states, plus Puerto Rico.

At least five of those cases have been deadly, and 14% required liver transplants, demonstrating how serious these cases can be, though they are still quite rare. 

24 states where hepatitis cases have been reported so far

The CDC says it's tracking and investigating cases that have happened "over the past seven months" in children younger than 10 years old across:

  • Alabama
  • Arizona
  • California
  • Colorado
  • Delaware
  • Florida
  • Georgia
  • Idaho
  • Illinois
  • Indiana
  • Louisiana
  • Michigan
  • Minnesota
  • Missouri
  • North Carolina
  • North Dakota
  • Nebraska
  • New York
  • Ohio
  • Pennsylvania
  • Puerto Rico
  • Tennessee
  • Texas 
  • Washington  
  • Wisconsin.

'It's still early days' for determining the cause, but experts have ruled out COVID-19 vaccines 

More than half of the children had an adenovirus infection when they contracted their liver inflammation, suggesting there could be some kind of viral trigger for this hepatitis, but it's still unclear exactly what is causing these cases. On Friday, the UK Health Security Agency released a technical briefing, saying the "leading hypotheses remain those which involve adenovirus." 

Still, the UK HSA added, "we continue to investigate the potential role of SARS-CoV-2 [the virus that causes COVID-19], and to work on ruling out any toxicological component."

"It's still early days in terms of pinpointing the cause," Dr. Umesh Parashar, the CDC's chief of viral diseases, said on the call. 

The CDC, like the UK HSA said it's possible environmental factors, medicines, or other non-adenovirus infections could be playing a role. But, "COVID-19 vaccination is not the cause of these illnesses," Dr. Butler said. 

That's because most of these kids are still too young to be vaccinated against COVID, with a median age of just two years old. In Alabama where the first nine confirmed cases were identified in the US, no child had a documented history of COVID-19 infection, and none were sick with COVID during their hospitalization either. Most of the children who've been diagnosed with this form of dangerous but rare hepatitis over the past seven months have fully recovered, the CDC said. 

The CDC is urging doctors, parents, and caregivers to watch out for:

  • Vomiting
  • Dark urine
  • Light-colored stool
  • Jaundice (yellowing of the whites of the child's eyes, and yellowing of the skin),

These are all signs that a child may be coming down with hepatitis.

In terms of prevention, basic hygiene measures are what's recommended. Adenoviruses, like other viruses, spread through the air from person to person, and also via the fecal-oral route. Washing hands before eating or handling food, and after changing diapers, going to the bathroom, or touching a snotty tissue are all important. Masks help too. 

This is a breaking story, please check back for updates. 

Read the original article on Business Insider