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总结
美国多地近期出现更具侵袭性的流感毒株传播，专家警告“超级流感”可能带来更广泛且更严重的病例。随着假期出行与家庭聚会增加，人群流动和密切接触或推动感染进一步上升。多家媒体援引CDC最新监测称，本季流感病例在全国范围走高，已报告约1900例相关死亡。公共卫生专家呼吁加强疫苗接种、症状监测与个人防护，以降低节后医疗系统压力与重症风险。
正文
Aggressive flu strain spreads across U.S., with experts predicting more cases after holiday travel WSMV This 'super flu' could cause widespread serious illness, experts say Northeastern Global News Flu cases on the rise amid holiday travel, gatherings, latest CDC data shows ABC News US witnesses 1900 flu deaths so far this season, reveals CDC data as cases surge across the country Times of India Deakin University Chair Prof Catherine Bennett warns about a new strain of influenza A and increased activity. facebook.com
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