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来源: 于 2021-03-28 06:42:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
  • Doctors explain how COVID-19 prevention efforts have diminished flu-related deaths this year.

 

  • The flu has almost entirely disappeared this winter, with just over 1,500 cases reported in the U.S. since late September.