Viral Hepatitis
Hepatitis is a general term that indicates an inflammation of the liver.
“Hepa” means liver and “itis” means inflammation. The viruses that affect
the liver are called viral hepatitis.
Currently, there are at least five known
viruses that cause hepatitis and liver damage: Hepatitis A, B, C, D, and E.
These viruses were named in order of their discovery. Although these viruses
may cause similar symptoms, they are all very different. They differ in how
they are transmitted and treated, as well as how severely they may impact the
body.
Hepatitis A
• Hepatitis A is a liver disease caused by the hepatitis A virus (HAV).
• Hepatitis A can affect anyone
• In the United States, hepatitis A can occur in situations ranging from
isolated cases of disease to widespread epidemics
• Good personal hygiene and proper sanitation can help prevent hepatitis A
• There is a vaccine available for long-term prevention of hepatitis A virus
infection in persons 12 months of age and older
• Immune globulin is available for short-term prevention of hepatitis A
virus infection in individuals of all ages.
Hepatitis B
• Hepatitis B is a serious disease caused by a virus that attacks the liver
• The virus, which is called hepatitis B virus (HBV), can cause lifelong
infection, cirrhosis (scarring) of the liver, liver cancer, liver failure and
death
• Hepatitis B virus can be found in the blood and other body fluids of an
infected person
• HBV is spread by direct contact with infected body fluids, usually by sexual
contact or needle stick exposure
• HBV can also be transmitted to infants born to mothers with hepatitis B
• Hepatitis B vaccine is available for all age groups to prevent hepatitis
B virus infection.
Hepatitis C
• Hepatitis C is a liver disease caused by the hepatitis C virus (HCV), which is
found in the blood of persons who have the disease
• HCV is spread by contact with the blood of an infected person
• A person may be at risk for hepatitis C and should contact a medical care
provider for a blood test if they: were notified that they received blood from
a donor who later tested positive for hepatitis C; have ever injected illegal
drugs, even if experimented a few times many years ago; received a blood
transfusion or solid organ transplant before 1992; were a recipient of clotting
factor(s) made before 1987; have ever been on longterm kidney dialysis; and
have evidence of liver disease (e.g., persistently abnormal ALT levels)
• There is currently no vaccine for the prevention of hepatitis C.
Hepatitis D
• Hepatitis D is a liver disease caused by the hepatitis D virus (HDV), a
defective virus that needs the hepatitis B virus to exist
• Hepatitis D virus (HDV) is found in the blood of people infected with the
hepatitis B virus, and is transmitted the same routes as HBV.
Hepatitis E
• Hepatitis E is a liver disease caused by the hepatitis E virus (HEV)
transmitted in a similar way to the hepatitis A virus, the fecal-oral route
• Hepatitis E does not occur often in the United States.
What can people do to reduce the risk of exposure to viral
hepatitis?
Measures to reduce the risk of exposure to viral hepatitis, especially
hepatitis A, B, and C, include:
• Get vaccinated with the hepatitis A and hepatitis B vaccines.
• Always wash your hands after using the bathroom, changing a diaper or
preparing or eating food.
• Practice safer sex by using latex condoms correctly every time you have sex.
• Don’t share anything that might have blood on it.
• Don’t shoot drugs. If you cannot stop using drugs, don’t share drugs, needles,
syringes, cookers, cotton, water or rinse cups.
• Don’t share personal care items, such as razors or toothbrushes.
• Learn about the health risks if you are planning to get a tattoo or body
piercing.
• Handle needles and sharps safely and always follow standard precautions
in the workplace.
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HEPATITIS A
Hepatitis A is a liver disease caused by hepatitis A virus.
Hepatitis A virus is spread from person to person by putting something in the
mouth that has been contaminated with the stool of a person with hepatitis A.
This type of transmission is called "fecal-oral." For this reason, the virus is
more easily spread in areas where there are poor sanitary conditions or where
good personal hygiene is not observed.
Most infections result from contact with a household member or sex partner who
has hepatitis A. Casual contact, as in the usual office, factory, or school
setting, does not spread the virus.
Persons with hepatitis A virus infection may not have any signs or symptoms of
the disease. Older persons are more likely to have symptoms than children. If
symptoms are present, they usually occur abruptly and may include fever,
tiredness, loss of appetite, nausea, abdominal discomfort, dark urine, and
jaundice (yellowing of the skin and eyes). Symptoms usually last less than 2
months; a few persons are ill for as long as 6 months. The average incubation
period for hepatitis A is 28 days (range: 15–50 days).
A blood test (IgM anti-HAV) is needed to diagnose hepatitis A. Talk to your
doctor or someone from your local health department if you suspect that you
have been exposed to hepatitis A or any type of viral hepatitis.
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