What type of vaccine is hepatitis?
There are two types of hepatitis A vaccine. The first type, the single-dose hepatitis A vaccine, is given as two shots, 6 months apart, and both shots are needed for long-term protection against hepatitis A. The other type is a combination vaccine that protects people against both hepatitis A and hepatitis B.
What is hepatitis B classified as?
Hepatitis B virus is classified in the genus Orthohepadnavirus, which contains 11 other species. The genus is classified as part of the Hepadnaviridae family, which contains four other genera, Avihepadnavirus, Herpetohepadnavirus, Metahepadnavirus and Parahepadnavirus.
What is in the hepatitis B vaccine made of?
The hepatitis B vaccine is made by taking the part of the virus that makes surface protein (surface protein gene) and putting it into yeast cells. The yeast cells then produce many copies of the protein that are subsequently used to make the vaccine.
Is hepatitis B virus a retrovirus?
HBV, a member of the Hepadnaviridae family, is a small DNA virus with unusual features similar to retroviruses. HBV replicates through an RNA intermediate and can integrate into the host genome. The unique features of the HBV replication cycle confer a distinct ability of the virus to persist in infected cells.
What are some examples of vaccines?
Vaccines help protect against many diseases that used to be much more common. Examples include tetanus, diphtheria, mumps, measles, pertussis (whooping cough), meningitis, and polio. Many of these infections can cause serious or life-threatening illnesses and may lead to life-long health problems.
Which organ is most affected by hepatitis B?
Hepatitis B (HBV) is a virus that attacks the liver. It causes the liver to become inflamed (swollen). Over time, the liver can become badly damaged.