other factors to consider

来源: 2kidsMomCa 于 2021-04-16 16:15:35 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读： 次 (94 bytes)
回答: 疫苗的效果，俺毛估估 由 TBz 于 2021-04-16 14:56:50

1. did those people followed social distance?

2. did they wear masks?

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