MILAN (Reuters) - Italian researchers are looking at whether a h

来源: 2020-04-23 21:53:47 [旧帖] [给我悄悄话] 本文已被阅读:

MILAN (Reuters) - Italian researchers are looking at whether a higher than usual number of cases of severe pneumonia and flu in Lombardy in the last quarter of 2019 may be a signal that the new coronavirus might have spread beyond China earlier than previously thought.