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https://www.stripes.com/news/pacific/herd-immunity-could-keep-coronavirus-afflicted-carriers-in-the-fight-former-navy-captain-says-1.624433
您即将离开知乎,请注意您的帐号和财产安全。
https://www.stripes.com/news/pacific/herd-immunity-could-keep-coronavirus-afflicted-carriers-in-the-fight-former-navy-captain-says-1.624433