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我国是甲型肝炎 (甲肝 )高发区 ,各地流行率差异显著 ,造成甲肝免疫低屏障区和高屏障区交互存在。为了预防特大型甲肝的暴发或流行 ,应认真做好流行病学调查。我们于 1998年 10月对青海省循化撒拉族自治县和互助土族自治县撒拉族、土族的部分人群进行了甲肝病毒 (ＨＡＶ )的自
China is a high-prevalence area of hepatitis A (hepatitis A), and the prevalence rate varies significantly across regions, resulting in the interaction of the low-barrier area and the high-barrier area. In order to prevent the outbreak or epidemic of oversized hepatitis A, serious epidemiological investigations should be conducted. In October 1998, we carried out the Hepatitis A Virus (HAV) epidemic in parts of the Salar and Tu people in Xunhua Salar Autonomous County and Huzhu Tujia Autonomous County in Qinghai Province.