identify the pathogen meaning in Chinese

鉴别病原体

That represents an increase of 16 patients and 17 confirmed cases over yesterday . as mentioned by dr yeoh , pneumonia is always there and sometimes we cannot really tell whether it s typical or not atypical because we had not been able to identify the pathogen
以上是我们的数字，正如刚才杨局长所说，其实肺炎一直以来都存在，亦在社区里，譬如在病人里的肺炎有时候我们未必可以分清楚是否非典型肺炎，因为现时还未清楚是何种病菌。