Since then, immunization rates have dramatically improved in the U.S.

从那以后，美国的免疫率得到了大幅度提高。

New South Wales topped the 80 percent immunization rate over the weekend.

经过这个周末，新南威尔士州的疫苗接种率超过了80%。

Wealthier countries' immunization rates have also been plunging during the pandemic.

疫情期间相对富裕的国家的免疫接种率也在持续下降。

But in recent years, immunization rates have began declining, due in part to the growing misconceptions that have erroneously linked these vaccines to autism and other disorders.

但近年来， 免疫接种率开始下降，部分原因是越来越多的误解将这些疫苗错误地与自闭症和其他疾病联系起来。