Other viruses have been identified more recently. Contact with something, usually food or water, contaminated by the feces of an infected person. But some infected people have no symptoms. Bed rest and increased intake of fluids. Infections can be prevented if immune globulin, which is a preparation of antibodies, is given within two weeks of exposure to the virus.
Vaccines are available.
Babies can be infected by their mothers during birth. Can lead to cirrhosis of the liver and liver cancer, however most people infected with the virus do not develop chronic infection. Some people never develop symptoms. The drug interferon reduces the chance of a return of the disease and can be effective in about 30 percent to 40 percent of patients. A vaccine has been available since the early 1980s.