随着对 Delta 变体的担忧持续增加,库克县提供疫苗战略的最新信息
...virus.” The delta variant, which was first identified in March, accounts for more than half of the cases in the U.S. 和 is taking hold here in Illinois 和 throughout Cook County. This variant, which mutated from the original strain, is highly contagious 和 causes more severe illness. Unvaccinated individuals continue to be most at-risk for serious illness, hospitalization 和...