美国疾控中心11月6日更新麻疹数据：截至11月5日2026年累计确诊5182例、43起新疫情，96%病例与疫情相关
亚特兰大 — 美国疾病控制与预防中心 11 月 6 日更新的麻疹病例与疫情页面显示，截至 2026 年 11 月 5 日，全美 2026 年累计报告确诊麻疹病例 5182 例。其中 5164 例由 47 个司法管辖区报告，另有 18 例为到访美国的国际旅客病例。疾控中心称，该页数据为各管辖区截至周四中午向中心通报的确诊病例，疑似病例不计入。
疾控中心称，2026 年共报告 43 起新疫情，疫情定义为 3 例或以上关联病例；确诊病例中 96% 与疫情相关，共 4993 例，其中 3608 例来自 2026 年开始的疫情、1385 例来自 2025 年开始的疫情。作为对照，2025 年全年确诊病例为 2289 例、共 48 起疫情，其中 90% 与疫情相关。疾控中心页面列示，2026 年麻疹相关死亡为 4 例，并注明该数字可能随复核更新。
疫苗覆盖方面，疾控中心称，美国幼儿园儿童麻疹、腮腺炎与风疹三联疫苗覆盖率已由 2019 至 2020 学年的 95.2% 降至 2025 至 2026 学年的 92.4%，低于 95% 的社区免疫目标，约 28 万名幼儿园儿童在 2025 至 2026 学年处于风险中。疾控中心称，两剂三联疫苗预防麻疹的有效率为 97%，一剂为 93%。
疾控中心称，麻疹于 2000 年在美国被宣布消除，意指国内无持续传播，新病例仅源于境外感染后入境者；该机构同时表示，各州掌握本辖区病例与疫情的最新信息，州与地方卫生部门负责牵头病例与疫情调查。
CDC Updates Measles Data on November 6: 5,182 Confirmed Cases in 2026 as of November 5, With 43 New Outbreaks and 96 Percent of Cases Outbreak Associated
Atlanta — As of November 5, 2026, 5,182 confirmed measles cases were reported in the United States in 2026, according to the Centers for Disease Control and Prevention measles cases and outbreaks page, updated on November 6. Among these, 5,164 cases were reported by 47 jurisdictions, and 18 cases were reported among international visitors to the United States. The page reflects only confirmed cases notified to CDC as of noon on Thursdays, the agency said.
There have been 43 new outbreaks reported in 2026, with an outbreak defined as 3 or more related cases, and 96 percent of confirmed cases, 4,993 of 5,182, are outbreak associated, comprising 3,608 from outbreaks starting in 2026 and 1,385 from outbreaks that started in 2025, CDC said. For the full year of 2025, 2,289 confirmed cases and 48 outbreaks were reported, with 90 percent of cases outbreak associated. The CDC page lists 4 measles associated deaths in 2026, noting the number is subject to change as reviews are completed.
On coverage, CDC said measles, mumps and rubella vaccine coverage among U.S. kindergartners decreased from 95.2 percent during the 2019 to 2020 school year to 92.4 percent in the 2025 to 2026 school year, below the 95 percent coverage level associated with community immunity, leaving approximately 280,000 kindergartners at risk during the 2025 to 2026 school year. Two doses of MMR vaccine are 97 percent effective at preventing measles, and one dose is 93 percent effective, CDC said.
Measles was declared eliminated in the United States in 2000, CDC said, and state, local, tribal and territorial health departments lead measles case and outbreak investigations, with states holding the most up to date information for their jurisdictions.
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