新型冠状病毒英语词汇：传播和检测篇

　　病毒源头：source of the virus

　　传播途径：transmission routes

　　社区传播：community transmission

　　人传人：human-to-human transmission/spread from human to human

　　感染机理：infection mechanism

　　确诊肺炎病例：confirmed cases of pneumonia

　　被诊断出肺炎：be diagnosed with pneumonia

　　免疫学检测方法：immunological detection methods

　　抗体和疫苗研发：develop antibodies and vaccines