美国疾病控制中心本周报告新增麻疹病例178例，涉及至少43个疫情爆发点1。2026年美国麻疹确诊总数已达4,588例，较2025年增长逾一倍1。其中宾夕法尼亚州疫情最为严峻，已报告1,338例确诊病例和5例死亡1。南卡罗来纳州和犹他州的确诊病例均超过500例1。
根据官方数据，未接种疫苗的感染者中五分之一需要住院治疗，死亡率约为千分之一至三1。麻疹疫苗有效率达97%1。
卫生部长肯尼迪曾在9月要求疾控中心官员删除一例麻疹死亡数据1，并解除疫苗安全专家委员会全部17名成员1。法院已于3月阻止其新任命生效1。肯尼迪还声称儿童接种疫苗超过90剂，并将疫苗与自闭症关联，同时要求疾控中心删除疫苗不引发自闭症的相关声明1。
The US Centers for Disease Control and Prevention reported 178 new measles cases this week, bringing the 2026 cumulative total to 4,588 cases—more than double the 2025 figure 1. The outbreak spans at least 43 distinct clusters across the country 1. Pennsylvania has emerged as the hardest-hit state, with 1,338 confirmed cases and five deaths attributed to measles, while South Carolina and Utah have each reported more than 500 cases 1.
Among unvaccinated individuals who contract measles, one in five requires hospitalization, and between one and three per thousand die from the infection 1. The measles vaccine demonstrates a 97 percent effectiveness rate 1.
Health Secretary Robert Kennedy has drawn scrutiny for his actions regarding outbreak response and vaccine policy. In September, Kennedy reportedly requested that CDC officials delete data on one measles death 1. He has disbanded all 17 members of the vaccine safety expert committee, though a court blocked the effectiveness of new appointments in March 1. Kennedy has made several misleading claims about vaccine safety, including assertions that children receive over 90 vaccine doses and linking vaccines to autism, while demanding that the CDC remove statements indicating vaccines do not cause autism 1.
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