2016-06-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/705406摘要:國內自2009至2011年的H1N1新型流感疫情,於2015至2016年初再度流行H1N1流感。雖然國內衛生機關制定及實施了相當完備的防疫政策及疫苗施打,各地醫院也都進行完善的流感動線及疫情因應。然而,此波流感疫情明顯比往年嚴重,除感染病人數目大幅增加外,流感重症及死亡個案也是創近五年新高,尤其是50-64歲族群增加幅度最為顯著。這些流感重症病人是否帶有特殊之危險因子、臨床表現、就醫行為,抑或此波疫情與病毒株變異,甚至是防疫策略等議題,目前尚未釐清。因此,本研究計畫擬從公衛、臨床以及病毒學各種層面,探討此波流感疫情與往年及其他國家相異之處,並透過疾病管制署及健保署取得的全國性統計資料、院內流感確診病人之臨床資料、以及重症病人分離出來之病毒株等作為研究材料,期能分析出此波季節性流感造成受感染者及重症病患大幅增加的原由,以提供衛生機關調整未來控制流感疫情策略之重要依據。 本研究計畫將分為幾個重要項目進行:(1)研究全國性流感相關流行病學、監測與時序關係,並透過文獻探討,比較國內外疫情及醫療、防疫處置之異同,以瞭解國內疫情發生之可能根本原因分析。(2)以疾病管制署104-105年流感季接獲通報之流感併發重症病例以及死亡個案作為研究材料,分析流感重症病人之基本資料、年齡、性別、系統性疾病、流感種類、治療方式及藥物併發症及預後,以瞭解此流感季併發重症及死亡之危險因子,以提供日後最適當之醫療處置建議。(3)流感病毒學及血清免疫學之分析,藉由在台大醫院收集到之病毒株血清學資料,分析病毒基因型,突變核苷酸檢測,血清抗體變化,並分析過去留存之病毒株比較,以瞭解此波台灣地區流行之病毒株差異,提供病毒學上流行之可能證據。 依此,本研究將利用全國公衛資料、醫院病人臨床資料、以及重症病人之病毒學分析,找出流感重症及死亡個案常見實驗室檢查的異常指標、臨床症狀的時序變化、最佳的治療模式與不良的預後因子。並釐清此波疫情是否與病毒株變異,防疫策略,抑或是民眾就醫行為的影響有關。藉由本研究結果,將可以提供政府衛生行政單位政策制定及臨床醫療治療照護重要參考。<br> Abstract: People of Taiwan have once experienced the 2009 H1N1 pandemic. Despite establishment and implementation of several control measures by our government, Taiwan was attacked by H1N1 influenza virus again during the 2015-2016 infuenza season, which resulted in considerably increases in infected people as well as cases of complicated influenza. In contrast with the situation in previous influenza seasons, the complicated cases this year were primarily 50-64 years of age. So far, it is still largely unkown whether the severities of this influenza season could be attributed to special host factors, antigenic mutation of the circulating virus or weakness in our preventive measures. We thus aim to thoroughly investigate factors associated with the increase in influenza activity and complications through epidemiological, clinical and virological aspects. To this end, nationwide statistical data from Center of Disease Control (CDC) and the National Health Insurance Administration database, as well clinical features of complicated influenza cases diagnosed in the hospitals will be obtained and analyzed. Stored clinical influenza virus from complicated cases will also be collected for phylogenetic and antigenic analysis. The results of this study will provide our health authorities useful information to formulate more optimal strategies against future influenza pandemics.流感流感重症併發症預後因子influenzacomplicationspredictorsEpidemiology and clinical characteristics of endemic severe influenza during 2015-2016