
ユニãƒãƒ¼ã‚µãƒ«ã‚¤ãƒ³ãƒ•ルエンザワクãƒãƒ³ã®é–‹ç™ºçжæ³ã¯ï¼Ÿ
ã?‚らゆるインフルエンザウイルスã?«å¯¾ã?—ã?¦æœ‰åйã?ªã€Œãƒ¦ãƒ‹ãƒ?ーサルインフルエンザワクãƒ?ンã€?ã?®é–‹ç™ºæˆ?功ã?¾ã?§ã€?é?“ã?®ã‚Šã?¯ã??ã?†é? ã??ã?ªã?„ã?®ã?‹ã‚‚ã?—れã?ªã?„。ヒトを対象ã?«ã?—ã?Ÿåˆ?期段階ã?®è‡¨åºŠè©¦é¨“ã?§ã€?ã?“ã?®å®Ÿé¨“çš„ã?ªãƒ¯ã‚¯ãƒ?ンã?®æŽ¥ç¨®ã?«ã‚ˆã‚Šã€?多様ã?ªã‚¤ãƒ³ãƒ•ãƒ«ã‚¨ãƒ³ã‚¶ã‚¦ã‚¤ãƒ«ã‚¹æ ªã‚„ã‚µãƒ–ã‚¿ã‚¤ãƒ—ã?«å¯¾ã?™ã‚‹å¼·åŠ›ã?‹ã?¤é•·æœŸé–“æŒ?ç¶šã?™ã‚‹å…?疫応ç”ã?®èª˜å°Žã?Œç¢ºèª?ã?•れã?Ÿã?®ã? 。米マウントサイナイ・アイカーン医科大å¦å¾®ç”Ÿç‰©å¦æ•™æŽˆã?®Florian Krammeræ°?らã?«ã‚ˆã‚‹ã?“ã?®ç ”ç©¶ã?®è©³ç´°ã?¯ã€?「Nature Medicineã€?ã?«12月7日掲載ã?•れã?Ÿã€‚
世界ä¿?å?¥æ©Ÿé–¢ï¼ˆWHO)ã?«ã‚ˆã‚‹ã?¨ã€?å£ç¯€æ€§ã‚¤ãƒ³ãƒ•ルエンザã?«ã‚ˆã‚Šä¸–界ä¸ã?§æ¯Žå¹´65万人もã?®äººã?Œæ»äº¡ã?—ã?¦ã?„る。ã?¾ã?Ÿã€?インフルエンザã?®ãƒ‘ンデミックã?¯æ±ºã?¾ã?£ã?Ÿé–“éš”ã?§ç™ºç”Ÿã?™ã‚‹ã‚?ã?‘ã?§ã?¯ã?ªã?„ã?Ÿã‚?ã€?å ´å?ˆã?«ã‚ˆã?£ã?¦ã?¯æ•°ç™¾ä¸‡äººã?®å‘½ã‚’奪ã?†å?¯èƒ½æ€§ã‚‚ã?‚る。
ç?¾è¡Œã?®ã‚¤ãƒ³ãƒ•ルエンザワクãƒ?ンã?¯ã€?ワクãƒ?ン接種ã?«ã‚ˆã‚Šä¸å’ŒæŠ—体(抗原ã?®æ´»å‹•を抑制ã?™ã‚‹ä½œç”¨ã?®ã?‚る抗体)を誘導ã?™ã‚‹ã?“ã?¨ã?§ã€?インフルエンザã?®ç™ºç—‡ã‚„é‡?篤化を防ã?„ã?§ã?„る。ã?—ã?‹ã?—ã€?ワクãƒ?ãƒ³è£½é€ ã?§ä½¿ã‚?ã‚Œã‚‹ã‚¦ã‚¤ãƒ«ã‚¹æ ªã?¨ã€?実際ã?«æµ?行ã?™ã‚‹ã‚¦ã‚¤ãƒ«ã‚¹ã?Œå¿…ã?šã?—も一致ã?™ã‚‹ã‚?ã?‘ã?§ã?¯ã?ªã?„。ã?¾ã?Ÿã€?インフルエンザウイルスã?®æ„ŸæŸ“ã?«å¤§ã??ã?ªå½¹å‰²ã‚’æžœã?Ÿã?™ã€?ウイルス表é?¢ã?®ç³–タンパク質〔ヘマグルãƒ?ニン(血ç?ƒå‡?é›†ç´ ã€?HA)ã€?ノイラミニダーゼ(NA)〕ã?®æŠ—原性ã?¯é »ç¹?ã?«å¤‰ç•°ã?™ã‚‹ã?Ÿã‚?ã€?æ—¢ã?«ç?²å¾—ã?—ã?Ÿå…?ç–«ã?§ã?¯ç™ºç—‡ã‚’防ã?’ã?ªã?„ã?“ã?¨ã‚‚ã?‚る。インフルエンザワクãƒ?ンを毎年接種ã?—ã?ªã?‘れã?°ã?ªã‚‰ã?ªã?„ã?®ã?¯ã€?ã?“ã?®ã?Ÿã‚?ã?§ã?‚る。
Krammeræ°?らã?Œé–‹ç™ºä¸ã?®æ–°ã?—ã?„ã‚メラHAベースã?®ãƒ¯ã‚¯ãƒ?ンã?¯ã€?従æ?¥ã?®ã‚¤ãƒ³ãƒ•ルエンザワクãƒ?ンã?¨ã?¯ç•°ã?ªã‚‹HAã?®é ˜åŸŸï¼ˆã‚¹ãƒˆãƒ¼ã‚¯é ˜åŸŸï¼‰ã‚’標的ã?¨ã?™ã‚‹ã?“ã?¨ã?§ã€?従æ?¥ã?®ãƒ¯ã‚¯ãƒ?ンã?®å¼±ç‚¹ã‚’å…‹æœ?ã?—よã?†ã?¨ã?™ã‚‹ã‚‚ã?®ã?§ã?‚る。従æ?¥ã?®ãƒ¯ã‚¯ãƒ?ンã?¯ã€?ä¸å’ŒæŠ—体ã?Œçµ?å?ˆã?—ã‚„ã?™ã?„HAã?®é ã?®éƒ¨åˆ†ã‚’標的ã?«ã?—ã?¦ã?„る。ã? ã?Œã€?ã?“ã?®éƒ¨åˆ†ã?®æ§‹é€ ã?¯ã€?インフルエンザウイルスã?®ã‚¿ã‚¤ãƒ—ã?”ã?¨ã?«å¤§ã??ã??ç•°ã?ªã?£ã?¦ã?„る。一方ã€?HAã?®é 部ã?«ç¶šã??ã‚¹ãƒˆãƒ¼ã‚¯é ˜åŸŸã?®æ§‹é€ ã?«ã?¯ã€?ウイルスã?®ã‚¿ã‚¤ãƒ—ã?”ã?¨ã?®å¤‰åŒ–ã?Œã?ªã?„。ã?“ã?®ã?Ÿã‚?ã€?ã‚¹ãƒˆãƒ¼ã‚¯é ˜åŸŸã‚’æ¨™çš„ã?«ã?—ã?Ÿãƒ¯ã‚¯ãƒ?ンを作れã?°ã€?ウイルスã?®å¤‰ç•°ã?«ã‚‚対応å?¯èƒ½ã?«ã?ªã‚‹ã?¨ã?„ã?†ã‚?ã?‘ã? 。
ã?“ã?®æ–°ãƒ¯ã‚¯ãƒ?ンã?®æœ‰åŠ¹æ€§ã?¨å®‰å…¨æ€§ã?¯ã€?米国ã?®æˆ?人65人(18~39æ³ï¼‰ã‚’対象ã?«ã?—ã?Ÿç¬¬â… 相臨床試験ã?§æ¤œè¨¼ã?•れã?Ÿã€‚ã??ã?®çµ?æžœã€?新ワクãƒ?ンを接種ã?™ã‚‹ã?“ã?¨ã?§ã€?ã?•ã?¾ã?–ã?¾ã?ªã‚¦ã‚¤ãƒ«ã‚¹æ ªã?«å¯¾ã?™ã‚‹å¼·åŠ›ã?ªå…?疫応ç”ã?Œèª˜å°Žã?•れã€?ã??ã?®äºˆé˜²åŠ¹æžœã?Œ18カ月以上æŒ?ç¶šã?™ã‚‹ã?“ã?¨ã?Œæ˜Žã‚‰ã?‹ã?«ã?ªã?£ã?Ÿã€‚ã?¾ã?Ÿã€?ワクãƒ?ンã?®å®‰å…¨æ€§ã‚‚確èª?ã?•れã?Ÿã€‚
ã?“ã?®çµ?果をå?—ã?‘ã?¦Krammeræ°?ã?¯ã€?「今回ã?®è‡¨åºŠè©¦é¨“ã?«ã‚ˆã‚Šã€?å…?疫応ç”ã?®æŒ?続性ã?¨ã?„ã?†ç‚¹ã?«é–¢ã?™ã‚‹ç§?ã?Ÿã?¡ã?®ç?†è§£ã?Œå¤§ã?„ã?«æ·±ã?¾ã?£ã?Ÿã€‚ã?¾ã?Ÿã€?ワクãƒ?ン接種ã?«ã‚ˆã‚‹ã‚¤ãƒ³ãƒ•ルエンザ予防ã?®ã?‚り方を大ã??ã??変ã?ˆå¾—ã‚‹ã€?ã?“ã?®æ–°ã?—ã?„ワクãƒ?ンã?®é–‹ç™ºæˆ?功ã?«å?‘ã?‘ã?¦ã€?大ã??ã?ªå¼¾ã?¿ã?Œã?¤ã?„ã?Ÿã€?ã?¨è¿°ã?¹ã?¦ã?„る。
一方ã€?ã?“ã?®ç ”ç©¶è«–æ–‡ã?®å…±è‘—者ã?§ã?‚ã‚‹ã€?å?Œå¤§å¦å¾®ç”Ÿç‰©å¦æ•™æŽˆã?®Adolfo GarcÃa-Sastreæ°?ã?¯ã€?「ã?•ã?¾ã?–ã?¾ã?ªã‚¤ãƒ³ãƒ•ルエンザウイルスã?«å¯¾å¿œå?¯èƒ½ã?§å¤šæ©Ÿèƒ½æ€§ã?®ã?“ã?®ãƒ¯ã‚¯ãƒ?ンã?¯ã€?国民ã?«ã‚¤ãƒ³ãƒ•ルエンザ予防接種を毎年行ã?†ã?Ÿã‚?ã?®ãƒªã‚½ãƒ¼ã‚¹ã‚„ãƒã‚¸ã‚¹ãƒ†ã‚£ã‚¯ã‚¹ã‚’æŒ?ã?Ÿã?ªã?„ä½Žãƒ»ä¸æ‰€å¾—国ã?«ã?¨ã?£ã?¦ã€?特ã?«æœ‰ç›Šã?¨ã?ªã‚‹å?¯èƒ½æ€§ã?Œã?‚ã‚‹ã€?ã?¨è©±ã?—ã?¦ã?„る。(HealthDay News 2020å¹´12月7日)
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