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Hepatitis

Hepatitis is an inflammation of the liver, most commonly caused by a viral infection. There are five main hepatitis viruses, referred to as types A, B, C, D and E.

Hepatitis A and E are typically caused by ingestion of contaminated food or water. Hepatitis B, C and D usually occur as a result of parenteral contact with infected body fluids (e.g. from blood transfusions or invasive medical procedures using contaminated equipment). Hepatitis B is also transmitted by sexual contact.

The symptoms of hepatitis include jaundice (yellowing of the skin and eyes), dark urine, extreme fatigue, nausea, vomiting and abdominal pain.


GENERAL INFORMATION

Fact sheets on hepatitis

Q&A: How do you get hepatitis B? How can I protect myself?

RELATED TOPICS

Hepatitis: water related diseases

Hepatitis B: vaccine safety

Hepatitis B: diagnostics

Hepatitis C: diagnostics

Infectious diseases

Immunization

Vaccines

International travel and health

TECHNICAL INFORMATION

Hepatitis: global alert and repsonse

Hepatitis B: vaccines

PUBLICATIONS

Hepatitis

STATISTICS

Hepatitis B: immunization surveillance, assessment and monitoring


WHO PROGRAMMES AND ACTIVITIES

Department of Immunization, Vaccines and Biologicals

Department of Epidemic and Pandemic Alert and Response
HEPATITIS IN WHO REGIONS

Region of the Americas-PAHO
European Region
Western Pacific Region


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