So despite full vaccination, his body was unable to produce enough antibodies to fend off the COVID-19 virus....
He died early Monday at Walter Reed National Military Medical Center outside Washington, D.C. People with weakened immune systems, such as Powell, rely on “ herd immunity ” for protection....
As long as some people remain unvaccinated, the virus continues to circulate — and can cause infection in the most vulnerable.[ Don't miss] Recovery lags for South Loop restaurants without work
综合
芝加哥论坛报-国家与世界
2021-10-20 00:00:00.0