claim: 美国“病毒猎手”：新冠病毒可能已在人类中传播数月甚至数年
summary: on cnn, columbia university ian lipkin claims the virus did not originate from bats but have been around for a few years
subject_description: columbia university professor ian lipkin claims the virus may not have originated from bats but would have been around for years
Motive_Description: spread false claim that the virus did not originate from bats but were around for years
author_description: ian lipkin professor
keywords: coronavirus, columbia university, ian lipkin, years