A Study on HBV₂ Infection of Serum of Primary Liver Cancer in Qidong

A study on HBV, infection of sora of primary liver cancer was made in Qidong The total infectional rate of HBV was 95.39%(641/672). The infectional rate of HBV₂ was 4.02%(27/672 ). It cocupied 5.29%(27/510) of the patients with HBaAg positive. The mixed infectional rate of HBV₁ and HBV₂ was 1.93(13/672).Although the HBV₁ was infected ago and the anti-HBs was produced, the anti-HBs was not to prevent the HBV₂ infection again. It suggests that the preparation of vaccines must contain the antigen of HBV₂ in after.