How is hepatitis b transmitted?
CDC DVH - Hepatitis B FAQs for the Public
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*Hepatitis B Information for the Public*
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** Hepatitis B FAQs for the Public **
Index of Questions
· What is hepatitis?
· What is the difference between Hepatitis A, Hepatitis B, and Hepatitis
· What is Hepatitis B?
· How common is acute Hepatitis B in the United States?
· Has the number of people in the United States with acute Hepatitis B
Hepatitis B - Wikipedia, the free encyclopedia
** Hepatitis B **
From Wikipedia, the free encyclopedia
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/Classification and external resources/
Electron micrograph of hepatitis B virus
eMedicine med/992 ped/978
*Hepatitis B* is an infectious inflammatory illness of the liver caused by
the hepatitis B virus (HBV) that affects hominoidea, including humans.
Originally known as "serum hepatitis",^ the disease has caused epidemics
in parts of Asia and Africa, and it is endemic in China.^ About a third
of the world population has been infected at one point in their lives,^
including 350 million who are chronic carriers.^
The virus is transmitted by exposure to infectious blood or body fluids
such as semen and vaginal fluids, while viral DNA has been detected in the
saliva, tears, and urine of chronic carriers. Perinatal infection is a
major route of infection in endemic (mainly developing) countries.^
Other risk factors for developing HBV infection include working in a
healthcare setting, transfusions, dialysis, acupuncture, tattooing, sharing
razors or toothbrushes with an infected person, travel in countries where
it is endemic, and residence in an institution.^^^^ However,
hepatitis B viruses cannot be spread by holding hands, sharing eating
utensils or drinking glasses, kissing, hugging, coughing, sneezing, or
The acute illness causes liver inflammation, vomiting, jaundice, and,
rarely, death. Chronic hepatitis B may eventually cause cirrhosis and liver
cancerâa disease with poor response to all but a few current
therapies.^ The infection is preventable by vaccination.^
Hepatitis B virus is a hepadnavirusâ/hepa/ from /hepatotropic/
(attracted to the liver) and /dna/ because it is a DNA virus^âand
it has a circular genome of partially double-stranded DNA
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