 Unlike hepatitis A, the hepatitis B virus is not usually transmitted via contaminated water but rather via bodily fluids, such as blood or semen. It is often passed during sex or when using contaminated needles and medical equipment. It can lead to severe liver problems and is often fatal.
Hepatitis B occurs worldwide. Areas where there is a higher risk of exposure to hepatitis B include Eastern Europe, Russia, India, China, South and Central America, Africa, South East Asia and many islands in the South Pacific.
The vaccine is a course of three injections, which are given rapidly over a one month course or over a standard six month course.
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