Hepatitis A Warning for Parents: What Families Need to Know About the Recent Rise in Cases
Hepatitis A cases have raised concerns among families in Wales. Learn how the virus spreads, symptoms to watch for, vaccination guidance and how parents can reduce the risk.
Parents in parts of Wales are being urged to take precautions following an outbreak of hepatitis A involving children and adults in the Barry area.
According to reporting published on August 17, 2026, 11 confirmed cases have been identified in the area since December 2025. Public health officials have advised families to take steps to reduce transmission, while vaccination is being offered to some young children as part of efforts to contain the outbreak.
Hepatitis A is an infection that affects the liver. Although most people recover fully, the illness can sometimes cause significant complications, particularly in people who already have liver disease. The infection can also spread easily because people, especially young children, may have few or no obvious symptoms.
What is hepatitis A?
Hepatitis A is caused by the hepatitis A virus, which is mainly transmitted through microscopic traces of infected faeces.
The virus can spread when someone does not wash their hands properly after using the toilet and subsequently handles food, drinks or objects that another person touches. It can also be transmitted through contaminated food or water and through close contact with an infected individual.
The NHS says hepatitis A is relatively uncommon in the UK, although it is more widespread in parts of the world where sanitation and food hygiene standards are poorer.
Unlike hepatitis B and hepatitis C, hepatitis A does not normally become a long-term infection. Most people recover within several months.
Why can hepatitis A be difficult to spot in children?
One reason health officials can find it challenging to identify hepatitis A outbreaks is that infected children may experience mild symptoms or no symptoms at all.
The NHS specifically notes that most children, as well as some adults, may have mild symptoms or remain asymptomatic.
This means a child can potentially become infected without appearing seriously ill. The virus can then be passed to other people, particularly within households, nurseries and other settings where children are in close contact.
Parents should therefore pay attention to changes in their child's health, particularly if there has been known contact with someone who has hepatitis A.
Symptoms parents should know
Hepatitis A symptoms can initially resemble an ordinary viral illness.
Possible symptoms include tiredness, fever, headache, muscle or joint pain, loss of appetite, nausea, vomiting and abdominal discomfort.
More recognisable signs can develop later. These include dark urine, unusually pale stools, itchy skin and jaundice, which causes the skin and whites of the eyes to become yellow.
Jaundice can be harder to recognise on some skin tones, so changes in urine or stool colour may also be important warning signs.
The NHS advises people who believe they may have hepatitis A to seek medical advice, particularly if they have recently travelled to an area where the infection is common or have been in close contact with someone diagnosed with the illness.
How does hepatitis A spread?
Hepatitis A is primarily associated with faecal-oral transmission. In simple terms, this means the virus can reach another person's mouth through contaminated hands, food, water or surfaces.
Possible routes of infection include drinking contaminated water, eating food that has been washed or grown using contaminated water, consuming food prepared by an infected person and having close physical contact with someone carrying the virus.
The virus can also be transmitted through certain sexual contact and through sharing equipment used for injecting drugs.
Good hygiene is therefore one of the most important ways families can reduce the risk of transmission.
What can parents do to reduce the risk?
Regular handwashing is particularly important.
Children should wash their hands thoroughly with soap and water after using the toilet and before eating. Parents and carers should also wash their hands after changing nappies and after helping a child who has been sick.
Frequently touched areas in bathrooms should be cleaned regularly, especially toilet handles, taps and other surfaces.
If someone in the household develops hepatitis A, medical professionals should be consulted about how to limit contact and protect other family members.
The NHS recommends that people with hepatitis A limit contact with others during the infectious period and avoid preparing food or drinks for other people.
Is there a vaccine?
Yes. Vaccination is considered the best way to prevent hepatitis A.
However, hepatitis A vaccination is not routinely offered to every child in the UK because the general risk of infection is considered low. The NHS recommends vaccination for people who are considered to be at increased risk, including certain travellers, people with long-term liver disease and people who have recently been in close contact with someone infected with hepatitis A.
During an outbreak, public health authorities may recommend vaccination for particular groups to help control further spread.
In the Barry outbreak described in recent reporting, vaccination was being offered to young children as part of the public health response. Families affected by the local advice should follow instructions from their local health protection team or healthcare provider.
How common is hepatitis A in the UK?
Hepatitis A is not among the most common infections in Britain, but surveillance data show that cases can fluctuate significantly.
UK Health Security Agency figures for England and Wales recorded 889 laboratory reports of hepatitis A in 2024. The same report shows considerably lower totals in several previous years, demonstrating that case numbers can vary over time.
UKHSA continues to monitor hepatitis A through laboratory surveillance and publishes national data and guidance relating to prevention and outbreak management.
When should parents seek medical advice?
Parents should contact a healthcare professional if their child develops symptoms that could indicate hepatitis A, particularly if there has been known exposure to the virus.
Medical advice is especially important for children with an existing liver condition or other circumstances that could increase the risk of complications.
Hepatitis A usually clears without specific treatment, and the NHS states that recovery generally occurs within three to six months. A small number of people can develop further liver problems, so medical monitoring may sometimes be necessary.
The key message for families is not to panic. Instead, parents should focus on good hand hygiene, follow local public health advice and seek medical guidance if symptoms or possible exposure occur.
Sources
- NHS, “Hepatitis A”, NHS website.
- UK Health Security Agency, “Hepatitis A: England and Wales”, UKHSA surveillance data.
- UK Health Security Agency, “Viral hepatitis A: guide to local and national data.”
Disclaimer: Information is provided for general educational purposes only and should not be considered medical advice. Readers should consult a qualified healthcare professional or official public health authority for individual medical concerns and the latest guidance.