Several vials labeled "smallpox" have been found at a vaccine research facility in Pennsylvania, the US Centers for Disease Control and Prevention said Tuesday.
원문출처 : https://www.cnn.com/2021/11/16/health/smallpox-vials-found/index.html
원문출처 : https://www.cnn.com/2021/11/16/health/smallpox-vials-found/index.html