Tuesday, April 26, 2022

Global mystery hepatitis outbreak spreads to Asia and Canada

Japan reports child with acute liver disease of unknown origin, and Canada investigating similar cases, with nearly 200 now recorded worldwide

Severe hepatitis of unknown origin has been recorded in children in a dozen countries around the world. 
Photograph: Rost-9D/Getty Images/iStockphoto


Guardian staff
Wed 27 Apr 2022

A mysterious liver disease that has infected children in a dozen countries around the world has reached Asia, with a case reported in Japan.

The case in Japan of acute hepatitis – or inflammation of the liver – of unknown origin was flagged by local authorities on 21 April in a child who had tested negative for adenovirus – a possible cause being investigated worldwide – and Covid-19.

The patient had not had a liver transplant, the health ministry said on Monday, without giving further details.


At least one child has died from mystery strain of severe hepatitis, WHO confirms


Canada’s Public Health Agency said on Tuesday it was investigating reports of severe acute hepatitis of unknown origin in young children. It did not reveal the number of cases or their location.

So far across the world, 190 mystery cases of acute hepatitis in children have been reported, with 140 of them in Europe, mostly in the UK (110 cases). Further cases have been found in Israel and in the United States. Seventeen children became so sick they needed liver transplants.

The US Centers for Disease Control and Prevention said in a nationwide health alert last week that the first US cases were identified in October in Alabama. The first UK cases were recorded in January.

On Saturday, the World Health Organization (WHO) said at least one death had been reported in connection the outbreak. The UN health agency said the cases were reported in children aged between one month and 16 years. The WHO did not say in which country the death occurred.

Hepatitis is usually caused by one of several contagious hepatitis viruses, but these have not been found in the affected children. Jaundice, diarrhoea and abdominal pain are among reported symptoms.

One theory being investigated by the UK Health Security Agency is that a lack of exposure to the common adenovirus – which usually causes stomach upsets and colds – during the coronavirus pandemic has led to more severe illness among children. Of 53 cases tested in the UK, 40 (75%) showed signs of adenovirus infection.

Public Health Scotland’s director, Jim McMenamin, told Reuters that work was under way to understand if an adenovirus has mutated to cause more severe disease, or if it could be causing the problems “in tandem” with another virus, including possibly Sars-CoV-2, the virus that causes Covid-19.

UK officials said there was “no link” between the cases and the Covid-19 vaccine, because none of the children affected by hepatitis had received a jab.

Andrea Ammon, director at the European Centre for Disease Prevention and Control in Stockholm, said: “So far there is no connection between the cases and no association to travel.”

The disease appeared in previously healthy children, Ammon said.

Children's mystery liver disease now in Asia

By Karthikeya
| Published: Tuesday, April 26, 2022

Tokyo, Apr 26: Just days after the first death due to mysterious liver disease which is spread in over 10 countries including the UK and the US, Asia seems to have registered the first case. A young child is likely to have been infected by the disease in Japan, Bloomberg reported.

An adenovirus was detected in over 40 per cent of the global cases, the first case has tested negative, as per the authorities. However, the age of the child has not been revealed, the report adds, claiming that the infected person has not undergone a liver transplant.

The first cases were recorded in Britain, where 114 children have been sickened. "It is not yet clear if there has been an increase in hepatitis cases, or an increase in awareness of hepatitis cases that occur at the expected rate but go undetected," WHO said in a recent statement.

Experts say the cases may be linked to a virus commonly associated with colds, but further research is ongoing. "While adenovirus is a possible hypothesis, investigations are ongoing for the causative agent," WHO said, noting that the virus has been detected in at least 74 of the cases.

At least 20 of the children tested positive for the coronavirus. WHO said affected countries are stepping up their surveillance of hepatitis cases in children.

The WHO first became aware of the unusual illnesses early this month, when they learned of 10 children in Scotland with liver problems. One got sick in January and the nine others in March. All became severely ill and were diagnosed with hepatitis after being taken to the hospital.


EXPLAINER: What's known about sudden liver disease in kids

By Lindsey Tanner | AP
Today at 2:20 p.m. EDT

A puzzling outbreak of sudden liver disease in nearly 200 children has health authorities in Europe and the U.S. racing to find answers.

The illnesses have no known connection, although a possible link with a virus that can cause colds is being investigated. At least one child died and several others have required liver transplants.

What’s known so far:

THE BASICS

Previously healthy children are suddenly developing hepatitis, or liver inflammation often caused by viruses. Jaundice, diarrhea and abdominal pain are among reported symptoms. Children aged 1 month to 16 years have been affected.

Most cases have occurred in Europe. The first U.K. cases were recorded in January. The Centers for Disease Control and Prevention said in a nationwide health alert last week that the first U.S. cases were identified in October in Alabama.

THE DISEASE


Hepatitis is usually caused by one of several contagious hepatitis viruses that have not been found in the affected children. Sometimes the disease is mild and requires no specific treatment. But severe cases require hospitalization and can lead to liver failure.

THE CAUSE

Authorities are uncertain what is causing the outbreak. Nine children in the Alabama cluster tested positive for adenovirus. Some types of the virus can cause colds but authorities are also looking at a version that can cause digestive problems. It is unknown whether that virus is a cause or is somehow contributing to the outbreak.


LOCATIONS


Cases have been reported in at least a dozen countries, including Denmark, England, France, Ireland, Israel, Italy, the Netherlands, Norway, Scotland, Spain, and the United Kingdom. In the United States, cases have also occurred in Illinois and North Carolina.

The CDC says all physicians should be on the lookout for symptoms and report any suspected case of what’s called hepatitis of unknown origin.


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Follow AP Medical Writer Lindsey Tanner at @LindseyTanner.


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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Departmen

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