Conclusion The incidence of viral hepatitis was significantly higher in 2004 than in previous years, which was associated with the implementation of direct reporting through network system and the reinforcement of propaganda and supervision of the " Act on the Prevention and Control of Infectious Diseases ". 结论2004年病毒性肝炎发病率明显高于往年,与2004年实行网上直报,并加大了《传染病防治法》的宣传与监督力度有关。