Tens of thousands of vaccinated people may catch Covid-19, but the majority will not fall severely ill — a testament to the efficacy of inoculations even against the Delta variant that has been fueling case surges across the US, a top health official said.
원문출처 : https://www.cnn.com/2021/08/06/health/us-coronavirus-friday/index.html
원문출처 : https://www.cnn.com/2021/08/06/health/us-coronavirus-friday/index.html