People who recovered from COVID-19 before being vaccinated may not need boosters even if the virus does make a significant transformation.“ It’s a good sign for how durable our immunity is from this vaccine, ” said Ali Ellebedy, an immunologist at Washington University in St....
From 14 of these people, the team extracted samples from the lymph nodes at three, four, five, seven and 15 weeks after the first dose. That painstaking work makes this a “ heroic study, ” said Akiko Iwasaki, an immunol
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芝加哥论坛报-国家与世界
2021-06-29 00:00:00.0