肝癌病因至今未明。几年来的调查研究初步认为,病毒性肝炎的流行、饮用水源的污染,以及粮食中黄曲霉菌的侵染等是导致肝癌高发的主要可疑因素。根据毛主席“预防为主”的方针,针对这些可疑因素我们采取了积极的预防措施,即大力开展以“两管一灭”为主的爱国卫生运动,大打防治肝炎、改良饮水及粮食防霉的人民战争。预防措施 The cause of liver cancer is still unknown. The investigation and research over the past few years have initially concluded that the prevalence of viral hepatitis, the contamination of drinking water sources, and the infection of Aspergillus flavus in food are the main suspicious factors that cause the high incidence of liver cancer. According to Chairman Mao’s principle of “prevention first”, we have taken positive precautions against these suspicious factors by vigorously launching a patriotic health campaign featuring “two tubes, one tube and one tube”, fighting against hepatitis, improving drinking water and food security Moldy people’s war. Precaution