الفهرس 
Chapter (I): Introduction and aim of the workOnly 14 pages are availabe for public view
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Abstract
Introduction:Hepatitis B virus infection is one of the most important blood transmitted viral infections in the world. The WHO estimated that there are 257 million people are infected with this virus, of whom nearly a million die annually, most of them due to the complications of this infection such as liver cirrhosis and liver cancer.
In recent decades, the WHO has developed several important preventive measures to reduce the spread of this viral infection in the world. These measures include implementing safe and effective vaccination for this viral infection for all newborns and for high-risk groups. In addition, testing blood and its derivatives for the presence of this viral infection in donors before donating, and introducing new highly accurate and sensitive tests such as NAT for blood testing in most developed countries, in addition to updating treatment regimens for this viral infection with more effective treatment for its chronic conditions.
The WHO has divided the world into three regions according to the number of virus carriers. A low prevalence region: where virus carriers range up to (2%) of the population, and a medium spread region where the virus carriers range between: (2-7%) of the population and a highly prevalent area where the rate of virus carriers reaches more than (8%) of the population.