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总结
多家美国媒体报道称，2025年流感季在多个地区快速升温，出现一种被称为“Super K”的K亚分支变异株，相关病例表现为症状发展较快。康涅狄格州流感病例攀升至医生称前所未见的高水平；纽约市流感传播加剧，媒体提醒出现疑似症状者应按指引处理并减少传播风险；纽约州报告超过二十年来最高的单周流感病例数；另有报道指病例“飙升”并创州级纪录。整体形势与假日聚会增多带来的接触和传播机会上升有关，可能加重医疗机构就诊压力与公共卫生防控负担。
正文
Flu season 2025: Subclade K variant known as 'Super K' showing fast flu symptoms amid holiday gatherings ABC7 Chicago Connecticut flu cases surge to highest levels doctors have ever seen WFSB The flu is surging in NYC. Here's what to do if you're sickened. Gothamist NY reports highest weekly flu cases in over two decades RiverheadLOCAL Bad flu season getting worse; skyrocketing cases set state record USA Today
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