Yěshēng dòngwù yǒushí huì chéngwéi xīn bìngdú de chuánrǎnyuán.
Wild animals can sometimes become the source of new viruses.
Tips
usage
A core epidemiology term, part of the classic triad 传染源 (source) / 传播途径 (route) / 易感人群 (susceptible population) taught in Chinese public-health courses.
