https://atlantak.com/cdc-%eb%b0%b1%ec%8b%a0-%eb%af%b8%ec%a0%91%ec%a2%85%ec%9e%90-%ec%bd%94%eb%a1%9c%eb%82%98-%ec%9e%ac%ea%b0%90%ec%97%bc%eb%a5%a0-%ec%a0%91%ec%a2%85%ec%9e%90-2%eb%b0%b0/
CDC "백신 미접종자 코로나 재감염률 접종자 2배"