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目的：了解通辽铁路分局地区病毒性肝炎的发病与流行趋势。方法：采用常规的流行病学统计分析方法。结果：通辽铁路分局地区病毒性肝炎以甲型肝炎和乙型炎发病率高，且多为青少年。结论：甲肝发病呈年龄后移趋势，且有逐年下降趋势；乙肝流行强度呈中等度流行，且有逐年上升趋势。
Objective: To understand the incidence and prevalence of viral hepatitis in Tongliao Railway Branch. Methods: Using conventional epidemiological statistical analysis methods. Results: The prevalence rates of hepatitis A and B in viral hepatitis in Tongliao Railway Branch are high, and mostly are adolescents. Conclusions: The incidence of hepatitis A shows a backward trend of age with a declining trend year by year. The epidemic intensity of hepatitis B is moderately prevailing and has been increasing year by year.