南卡罗来纳州麻疹疫情两周内五次传入华盛顿州

发表于《NEJM Evidence》的一项研究指出，2026年1月期间，南卡罗来纳州的麻疹爆发通过五次独立的输入事件传播至华盛顿州1。这些引入导致华盛顿州出现26例病例，随后被卫生官员控制1。由于疫苗接种率下降和国内旅行风险增加，此次跨省传播得以发生1。

南卡罗来纳州的此次爆发始于2025年10月2日，截至2026年4月26日结束，共确认997例病例1。这是美国自2000年宣布消除麻疹以来最大的爆发之一，该记录后被宾夕法尼亚州超过1。

A study published in NEJM Evidence reveals that the measles outbreak in South Carolina led to five independent importation events into Washington State within a two-week period in January 2026 1. These introductions resulted in 26 confirmed measles cases in Washington, which were subsequently contained by health officials 1. The research indicates that declining vaccination rates and increased domestic travel risks facilitated this spread from South Carolina to Washington State 1.

The outbreak in South Carolina began on October 2, 2025, and ended on April 26, 2026, confirming a total of 997 cases 1. This event stands as one of the largest measles outbreaks in the United States since the country declared the disease eliminated in 2000 1. However, the scale of the South Carolina outbreak has since been surpassed by a larger current outbreak in Pennsylvania 1.