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作者于1988年1月—12月对某3个野战部队急性病毒性肝炎的发病、漏报和流行病学特征等进行了流行病学研究.结果显示:该部队人群年发病率为1.35‰,其中甲型肝炎(甲肝)年发病率为0.71‰,乙型肝炎(乙肝)为0.34‰,非甲非乙型肝炎为0.07‰,不明型别为0.23‰.根据其中2个单位的随机抽查,漏报现象严重(6/13),实际年发病率估计高于1.35‰.年龄:甲肝为20±1.99岁,乙肝为25±279岁,两者在统计学上相差非常显著(t=5.53, P<0.01).由于该部队抗-HAV阳性率已达82.5％,对传播具有了一定的免疫屏障作用,而乙肝以亚临床感染为主,所以流行形式主要为散发,偶有爆发.
The author conducted epidemiological studies on the incidence, omission and epidemiological characteristics of acute viral hepatitis in three field units from January to December 1988. The results showed that the annual incidence rate of this force was 1.35 ‰, Among them, the annual incidence of hepatitis A (hepatitis A) was 0.71 ‰, that of hepatitis B (hepatitis B) was 0.34 ‰, that of non-A non-B hepatitis was 0.07 ‰, and that of unknown type was 0.23 ‰. According to random sampling of 2 units, The actual annual incidence was estimated to be higher than 1.35 ‰. Age: Hepatitis A was 20 ± 1.99 years old and Hepatitis B was 25 ± 279 years old. The difference between the two groups was statistically significant (t = 5.53, P <0.01) .Because the anti-HAV positive rate of the army reached 82.5%, it has certain immunological barrier to transmission, and hepatitis B is mainly sub-clinical infection, so the epidemic forms are mainly sporadic and occasional outbreaks.