Hepatitis a

Joint pain Jaundice yellowing of the skin and eyes Most children younger than age 6 do not have symptoms when they have hepatitis A. When symptoms are present, young children typically do not have jaundice but most older children and adults with hepatitis A have jaundice. How soon after exposure to hepatitis A will symptoms appear?

Hepatitis a

Hepatitis A - Symptoms and causes - Mayo Clinic

Key facts Hepatitis A is a viral liver disease that can cause mild to severe illness. The hepatitis A virus HAV is transmitted through ingestion of contaminated food and water or through direct contact with an infectious person. Almost everyone recovers fully from hepatitis A with a lifelong immunity.

However, a very small proportion of people infected with hepatitis A could die from fulminant hepatitis.

Transmission / Exposure

The risk of hepatitis A infection is associated with a lack of safe water, and poor sanitation and hygiene such as dirty hands. Epidemics can be explosive and cause substantial economic loss.

A safe and effective vaccine is available to prevent hepatitis A. Safe water supply, food safety, improved sanitation, hand washing and the hepatitis A vaccine are the most effective ways to combat the disease. Hepatitis A is a liver disease caused Hepatitis a the hepatitis A virus. The virus is primarily spread when an Hepatitis a and unvaccinated person ingests food or water that is contaminated with the faeces of an infected person.

The disease is closely associated with unsafe water or food, inadequate sanitation and poor personal hygiene. Unlike hepatitis B and C, hepatitis A infection does not cause chronic liver disease and is rarely fatal, but it can cause debilitating symptoms and fulminant hepatitis acute liver failurewhich is often fatal.

Hepatitis A occurs sporadically and in epidemics worldwide, with a tendency for cyclic recurrences. The hepatitis A virus is one of the most frequent causes of foodborne infection. Epidemics related to contaminated food or water can erupt explosively, such as the epidemic in Shanghai in that affected about people1.

Hepatitis A is a contagious liver infection caused by a virus. Learn how the disease spreads and what you can do to prevent or treat it. Hepatitis A is a viral infection that causes liver inflammation and damage. Inflammation is swelling that occurs when tissues of the body become injured or infected. Inflammation can damage organs. Viruses invade normal cells in your body. Many viruses cause infections that can be spread from person. The hepatitis A vaccine can prevent HAV. Good hygiene can also help. Wash your hands thoroughly before preparing food, after using the toilet, or after changing a diaper.

The disease can lead to significant economic and social consequences in communities. It can take weeks or months for people recovering from the illness to return to work, school, or daily life. The impact on food establishments identified with the virus, and local productivity in general, can be substantial.

Geographical distribution Geographical distribution areas can be characterized as having high, intermediate or low levels of hepatitis A virus infection. Those infected in childhood do not experience any noticeable symptoms.

Epidemics are uncommon because older children and adults are generally immune. Symptomatic disease rates in these areas are low and outbreaks are rare. Areas with intermediate levels of infection In developing countries, countries with transitional economies, and regions where sanitary conditions are variable, children often escape infection in early childhood and reach adulthood without immunity.

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Ironically, these improved economic and sanitary conditions may lead to accumulation of adults who have never been infected and who have no immunity.

This higher susceptibility in older age groups may lead to higher disease rates and large outbreaks can occur in these communities. Areas with low levels of infection In developed countries with good sanitary and hygienic conditions, infection rates are low. Disease may occur among adolescents and adults in high-risk groups, such as injecting-drug users, men who have sex with men, people travelling to areas of high endemicity, and in isolated populations, such as closed religious communities.

However, when the virus gets introduced in such communities, high levels of hygiene stops person-to-person transmission and outbreaks die out rapidly.

Transmission The hepatitis A virus is transmitted primarily by the faecal-oral route; that is when an uninfected person ingests food or water that has been contaminated with the faeces of an infected person.

In families, this may happen though dirty hands when an infected person prepares food for family members. Waterborne outbreaks, though infrequent, are usually associated with sewage-contaminated or inadequately treated water.

The virus can also be transmitted through close physical contact with an infectious person, although casual contact among people does not spread the virus.Hepatitis Overview Viral hepatitis, including hepatitis A, hepatitis B, and hepatitis C, are a group of distinct diseases that affect the liver.

Hepatitis A | NIDDK

Each have different hepatitis symptoms and treatments. Hepatitis A is a contagious liver infection caused by a virus. Learn how the disease spreads and what you can do to prevent or treat it.

Hepatitis A is a vaccine-preventable, communicable disease of the liver caused by the hepatitis A virus (HAV). It is usually transmitted person-to-person through the fecal-oral route or consumption of contaminated food or water. Hepatitis means inflammation of the liver. When the liver is inflamed or damaged, its function can be affected.

Heavy alcohol use, toxins, some medications, and certain medical conditions can cause hepatitis but a virus often causes hepatitis. In the United States, the most common hepatitis viruses. Hepatitis A is a highly contagious liver infection caused by the hepatitis A virus.

Hepatitis a

The virus is one of several types of hepatitis viruses that cause inflammation and affect your liver's ability to function. Hepatitis A is a liver disease caused by the hepatitis A virus.

The virus is primarily spread when an uninfected (and unvaccinated) person ingests food or water that .

Hepatitis A - Diagnosis and treatment - Mayo Clinic