CDC第41周流感报告：住院率创2010年以来同期新高 阳性率升至5.7%
亚特兰大——美国疾病控制与预防中心（CDC）10月23日（周五）发布的第41周流感监测（FluView）报告显示，截至10月17日的一周，估计流感住院率达到每10万人1.5–2例，为2010–11流感季以来同期最高水平；检测阳性率升至5.7%。
据Becker's Hospital Review对CDC官方报告的汇总，覆盖约10%美国人口的FluSurv-NET监测网记录的实际住院率为每10万人1.1例，与上周持平；计入报告延迟后，CDC估计第41周住院率在1.5–2/10万之间，创第41周同期15年新高。65岁以上人群住院率最高（7.4/10万），其次为50–64岁（2.3/10万）与4岁及以下儿童（1.7/10万）。全美医院另向国家医疗安全网报告了4,811例实验室确诊流感入院。
临床实验室阳性检出率为5.7%，高于上周的5%；公共卫生实验室分型的241株甲流病毒中，99.2%为H1N1、无H3N2。急诊流感诊断占比0.9%，与上周持平；流感样疾病门诊占比2.2%，低于2.9%的全国基线。CDC继续建议6个月以上人群每年接种流感疫苗。（GSM 据Becker's Hospital Review汇总CDC FluView官方报告）
来源：GSM·美国
CDC FluView Week 41: Flu Hospitalization Rate Hits Highest Mid-October Level Since 2010; Positivity Rises to 5.7%
ATLANTA — The CDC's FluView report for Week 41, released Friday, October 23, showed the estimated flu hospitalization rate for the week ending October 17 at 1.5–2 per 100,000 — the highest Week 41 rate since the 2010–11 flu season — while test positivity rose to 5.7%.
According to Becker's Hospital Review's summary of the official CDC report, FluSurv-NET, which covers about 10% of the U.S. population, recorded an actual weekly rate of 1.1 per 100,000, unchanged from the prior week; after accounting for reporting delays, the CDC estimates the Week 41 rate likely falls between 1.5 and 2 per 100,000, the highest for that point in the season in 15 years. Adults 65 and older had the highest rate at 7.4 per 100,000, followed by ages 50–64 at 2.3 and children 4 and younger at 1.7. Hospitals separately reported 4,811 lab-confirmed flu admissions to the National Healthcare Safety Network.
Clinical labs reported 5.7% positivity, up from 5% the prior week; of 241 influenza A viruses subtyped by public health labs, 99.2% were H1N1 and none were H3N2. Flu diagnoses accounted for 0.9% of emergency department visits, stable from the previous week; flu-like illness made up 2.2% of outpatient visits, below the 2.9% national baseline. The CDC continues to recommend annual flu vaccination for everyone 6 months and older. (GSM, from Becker's Hospital Review's summary of the official CDC FluView report)
Source: GSM·USA
来源：GSM·美国（原文链接）
图片来源：甲型H1N1流感病毒显微图。照片：Scarzmouche，公有领域，经 Wikimedia Commons。 / Influenza A (H1N1) virus (micrograph). Photo: Scarzmouche, public domain, via Wikimedia Commons.
