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| 如果你忘記伊莉的密碼,請在登入時按右邊出現的 '找回密碼'。輸入相關資料後送出,系統就會把密碼寄到你的E-Mail。 Look at South Korea and Japan. There are still new Covid19 cases been confirmed. It is just not exponentially growing. For herd immunity to work, more than 70% population would have to have immunity. Social distancing could reduce rate of transmission but could not increase individual immunity. When relaxed distancing, infection rate could pick up and second wave of infection could happen.
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