TYPES OF HEPATITIS
Hepatitis A
This is caused by eating infected food or water. The food or water is infected with a virus called HAV (hepatitis A virus). Anal-oral contact during sex can also be a cause. Nearly everyone who develops Hepatitis A makes a full recovery - it does not lead to chronic disease.
Hepatitis B
This is an STD (sexually transmitted disease). It is caused by the virus HBV (hepatitis B virus) and is spread by contact with infected blood, semen, and some other body fluids. You get hepatitis B by:
- Unprotected sexual intercourse with an infected person (unprotected sex means without using a condom) Using a syringe that was previously used by an infected person (most commonly happens with drug addicts and people who inject steroids).
- Having your skin perforated with unsterilized needles, as might be the case when getting a tattoo, or being accidentally pricked. People who work in health care risk becoming infected by accident in this way. Sharing personal items, such as a toothbrush or razor, with an infected person.
- A baby can become infected through his mother's milk if she is infected.
- Being bitten by someone who is infected.
The liver of a person infected with hepatitis B swells. The patient can suffer serious liver damage due to infection, resulting in cancer. For some patients the hepatitis becomes chronic (very long-term or lifelong). Donated blood is always tested for hepatitis B.
Hepatitis C
Hepatitis C is usually spread through direct contact with the blood of a person who has the disease. It is caused by the virus HCV (hepatitis C Virus). The liver can swell and become damaged. In hepatitis C, unlike hepatitis B, liver cancer risk is only increased in people with cirrhosis and only 20% of hep C patients get cirrhosis. Feces is never a route of transmission in hepatitis C. Donated blood is also tested for hepatitis C.
Misuse of anesthesia can result in the transmission of hepatitis B and hepatitis C viruses, researchers reported in the journal Gastroenterology. The cause of infection tends to be from anesthesia contamination, and not endoscopy contamination. Experts say that more effort is needed to better educate the health care community about the importance of strict sterile techniques when using any type of anesthesia.
Hepatitis D
Only a person who is already infected with hepatitis B can become infected with hepatitis D. It is caused by the virus HDV (Hepatitis D Virus). Infection is through contact with infected blood, unprotected sex, and perforation of the skin with infected needles. The liver of a person with Hepatitis D swells.
Hepatitis E
A person can become infected by drinking water that contains HEV (hepatitis E virus). The liver swells but there is no long-term consequence. Infection is also possible through anal-oral sex.
Hepatitis X
If a hepatitis cannot be attributed to the viruses of hepatitis A, B, C, D, or E, it is called hepatitis X. In other words, hepatitis of an unknown virus.
Hepatitis G
This is a type of hepatitis caused by the hepatitis G virus (HGV). Usually there are no symptoms. When there are symptoms, they are very mild.
PREVENTION
Vaccines are available to prevent hepatitis A and B. Hepatitis A immunity is achieved in 99-100% of persons receiving the two-dose inactivated virus vaccine. The hepatitis A vaccine is not approved for children under one year of age. Vaccines to prevent hepatitis B have been available since 1986 and have been incorporated into at least 177 national immunization programs for children. Immunity is achieved in greater than 95% of children and young adults receiving the three-dose recombinant virus vaccine. Vaccination within 24 hours of birth can prevent transmission from an infected mother. Adults over 40 years of age have decreased immune response to the vaccine. The World Health Organization recommends vaccination of all children, particularly newborns in countries where hepatitis B is common to prevent transmission from the mother to child
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