What is the harm of viral hepatitis?

Viral hepatitis is our common infectious diseases, Incidence rates high, not only directly affects the population's health, and even endanger the lives and safety of people. They have caused direct and indirect economic losses are also high, has seriously affected production, work and study.
1988 Spring in Shanghai's largest hepatitis A outbreak of the epidemic in a short span of four months, the cumulative incidence of which more than 10,000 the number of deaths in 47 cases. It is estimated that the direct economic losses of about 508 million yuan and indirect economic losses for 557 million yuan, a total of 1.065 billion yuan.
Hepatitis B is mainly through blood transfusion and blood products, unclean injection and vertical transmission of perinatal infection. According serum epidemiological investigation, my crowd of hepatitis B surface antigen (HBsAg) carry rate of 10%, or about 120 million people, of whom 1 / 4 of people will eventually develop chronic liver disease, including chronic hepatitis, cirrhosis and liver cancer. China's current slow liver patients 12 million, died of liver disease each year by about 300,000, half of which were liver cancer. Particularly serious is carrying hepatitis B surface antigen of pregnant women, of which about 40% can be directly through mother-to-child vertical transmission to infants infected. Neonatal infection of hepatitis B virus (HBV), about 80% to 90% may become chronic hepatitis B virus carriers. In other words, every year about 800,000 to 1 million newborns a hepatitis B virus carriers, of which part of the adult child may develop liver cirrhosis or liver cancer, a direct impact on the health of the next generation.
Hepatitis C through blood transfusion and blood products and channels such as unclean injection caused dissemination. Due to the current blood donors for hepatitis C virus has not yet (HCV) screening, it caused hepatitis C virus incidence of post - transfusion hepatitis rate is very high. According to clinical observation study found that acute hepatitis C infection after about 50 percent to 70 percent may be turned into a chronic, and 20 percent of them eventually develop liver cirrhosis or liver cancer, liver cancer and its evolution to the hepatitis B virus faster than those caused more fast. Therefore, the hepatitis C virus infection on the great dangers.
Hepatitis D is on the basis of the occurrence of hepatitis B, liver D virus (HDV) and the hepatitis B virus mixed infection. After infection, easy to chronic hepatitis and cirrhosis, and will be readily developed into severe hepatitis, extremely high mortality rate.
The spread of hepatitis E and hepatitis A the same way, the domestic outbreaks have occurred more than popular, especially in the southern region of Xinjiang epidemic is most serious. Suffering from hepatitis E in pregnant women mortality can be as high as 10% to 20%, In addition, it often appeared abortion and stillbirth.
Visibility, viral hepatitis and the people's health and the impact on the country's economic construction and great danger must be active in prevention.