美国疾控中心第43周流感报告：截至10月31日单周8,396例实验室确诊住院、本季累计至少170万例患病与1,400例死亡，分型病毒97.7%为H1N1
华盛顿报道—美国疾病控制与预防中心（CDC）发布的 FluView 第43周流感监测报告（统计至2026年10月31日当周）显示，美国多地季节性流感活动继续上升，且高于往年同期通常水平；疾控中心同时说明，活动提前上升并不必然意味着本季峰值更高或整体更严重。报告数据均为初步数据，可能随后续报告修订。
实验室数据方面，第43周临床实验室共检测51,351份呼吸道样本，阳性4,696份，阳性率9.1%，其中甲型占98.6%；公共卫生实验室报告的513份病毒中，502份为甲型、11份为乙型，在完成分型的388份甲型病毒中，379份（97.7%）为 A(H1N1)pdm09，7份为 A(H3N2)，2份为甲型 A(H5)。门诊方面，全国类流感就诊占比为2.8%，低于2.9%的全国基线。住院方面，医院向国家医疗安全网络报告第43周实验室确诊流感住院8,396例，住院率为每10万人2.5；FluSurv-NET 监测的累计住院率为每10万人6.0，其中65岁及以上人群最高，为每10万人19.8。
疾控中心估计，本流感季至今至少有170万例患病、25,000例住院与1,400例死亡；第43周报告的与本季流感相关的儿童死亡累计为3例。报告另载，第43周有两例人感染禽流感 A(H5) 病毒的确诊病例报告至疾控中心、含1例死亡，两例均为华盛顿州奶牛场工作人员，美国境内迄今未发现 A(H5) 病毒的人际传播。疾控中心的 FluSight 预测显示，截至11月21日当周，全国流感住院人数可能继续上升，新住院预计在6,900至30,100例之间，急诊就诊中流感占比预计为1.6%至6.7%。疾控中心在报告中重申，流感疫苗适用于6个月及以上人群，建议尚未接种者接种。本稿只报道官方监测事实与资源信息，不作个体诊疗建议。
CDC Week 43 FluView: 8,396 Laboratory-Confirmed Hospital Admissions in the Week Ending October 31, at Least 1.7 Million Illnesses This Season, With H1N1 at 97.7% of Subtyped Viruses
WASHINGTON — Seasonal flu activity continues to increase in many parts of the United States and is higher than typically observed at this time of year, according to the Centers for Disease Control and Prevention's (CDC) FluView report for Week 43, the week ending October 31, 2026. The CDC notes that an earlier increase in activity does not necessarily lead to a higher seasonal peak or greater overall severity. All figures are preliminary and may change as more reports are received.
On laboratory measures, clinical laboratories tested 51,351 respiratory specimens in Week 43, with 4,696 positive (9.1%), of which 98.6% were influenza A. Public health laboratories reported 513 viruses — 502 influenza A and 11 influenza B — and of the 388 subtyped influenza A viruses, 379 (97.7%) were A(H1N1)pdm09, 7 were A(H3N2) and 2 were influenza A(H5). Outpatient visits for influenza-like illness were 2.8% nationally, below the 2.9% national baseline. Hospitals reporting to the National Healthcare Safety Network recorded 8,396 laboratory-confirmed influenza admissions in Week 43, a rate of 2.5 per 100,000 people, while FluSurv-NET's cumulative hospitalization rate was 6.0 per 100,000, highest among adults aged 65 and older at 19.8 per 100,000.
The CDC estimates there have been at least 1,700,000 illnesses, 25,000 hospitalizations and 1,400 deaths from flu so far this season, and three influenza-associated pediatric deaths occurring during the 2026-27 season have been reported. The report also records two confirmed human infections with avian influenza A(H5) virus reported that week, including one death, both in Washington State dairy farm workers; human-to-human transmission of A(H5) virus has not been identified in the United States. CDC's FluSight forecasts predict a likely increase in flu hospital admissions for the week ending November 21, ranging from 6,900 to 30,100 admissions, with flu accounting for 1.6% to 6.7% of emergency department visits. The CDC states that flu vaccination is recommended for persons aged 6 months and older and encourages those not yet vaccinated this season to be vaccinated. This report presents official surveillance facts and resources only and offers no individual medical advice.
来源：美国疾病控制与预防中心
发布：GSM·美国（发布链接）
图片来源：图：甲型流感病毒透射电镜图。（美国疾控中心，公共领域，经 Wikimedia Commons） / Photo: Transmission electron micrograph of influenza A virus. (CDC, public domain, via Wikimedia Commons)
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