美国总统特朗普签署行政令，要求减少美国儿童的疫苗接种数量[1]。在宣布会上，特朗普声称MMR混合疫苗"可能相当致命"[1]，并主张疫苗与自闭症相关[1]。这些言论遭到卫生专家警告，可能加剧公众对疫苗安全的怀疑和困惑[1]。
根据实际数据，美国儿童常规接种约35种疫苗（不包括非必须项目），而非特朗普所声称的72种[1]。多项独立研究未发现疫苗与自闭症之间存在关联[1]。美国疾病控制与预防中心2024年研究显示，1994至2023年间出生的儿童通过常规疫苗接种预防了约5.08亿例疾病、3200万例住院和1129000例死亡[1]。疫苗中使用的铝盐已有近100年的使用历史，多项临床试验支持其安全性和有效性[1]。
公共卫生形势面临压力。自2000年麻疹被宣布消除后，2026年不到两年的时间内，美国麻疹病例数已超过任何一个年份[1]。
President Trump has signed an executive order directing a reduction in the number of vaccines administered to American children [1]. During the announcement at the White House Oval Office, Trump made several contested claims about vaccine safety, stating that the MMR combination vaccine could be "potentially quite deadly" and asserting a link between vaccines and autism [1].
Health experts have warned that such statements will intensify public doubt and confusion regarding vaccine safety [1]. Trump's claims stand in stark contrast to scientific evidence: American children currently receive approximately 35 routine vaccines, not the 72 figure Trump cited [1]. A 2024 CDC study found that vaccines administered to children born between 1994 and 2023 prevented approximately 508 million diseases, 32 million hospitalizations, and 1.129 million deaths [1]. Additionally, multiple research studies have found no association between vaccines and autism, and aluminum salts used in vaccines have been safely employed for nearly a century with support from numerous clinical trials [1].
The policy shift comes as measles cases in the United States have exceeded any annual total recorded since the disease was declared eliminated in 2000, with over 2,000 cases reported within a two-year period [1].