{"id":1450,"date":"2026-09-27T19:21:17","date_gmt":"2026-09-27T10:21:17","guid":{"rendered":"https:\/\/jaast.jp\/?p=1450"},"modified":"2026-09-27T19:22:29","modified_gmt":"2026-09-27T10:22:29","slug":"%e7%9e%ac%e9%96%93%e7%9a%84%e3%81%aa%e9%ab%98%e6%b8%a9%e6%9b%9d%e9%9c%b2%e3%81%a7%e7%a9%ba%e6%b0%97%e4%b8%ad%e3%82%a4%e3%83%b3%e3%83%95%e3%83%ab%e3%82%a8%e3%83%b3%e3%82%b6%e3%82%a6%e3%82%a4%e3%83%ab","status":"publish","type":"post","link":"https:\/\/jaast.jp\/?p=1450","title":{"rendered":"\u77ac\u9593\u7684\u306a\u9ad8\u6e29\u66dd\u9732\u3067\u7a7a\u6c17\u4e2d\u30a4\u30f3\u30d5\u30eb\u30a8\u30f3\u30b6\u30a6\u30a4\u30eb\u30b9\u306f\u4e0d\u6d3b\u5316\u3067\u304d\u308b\u306e\u304b\uff1fCan Airborne Influenza Viruses Be Inactivated by Sub-Second Heating?"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u7a7a\u6c17\u4e2d\u306e\u30a6\u30a4\u30eb\u30b9\u3092\u300c\u71b1\u300d\u3067\u5236\u5fa1\u3067\u304d\u308b\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u51ac\u5b63\u306b\u6d41\u884c\u3059\u308b\u30a4\u30f3\u30d5\u30eb\u30a8\u30f3\u30b6\u3084COVID-19\u3067\u306f\u3001\u7a7a\u6c17\u4e2d\u3092\u6f02\u3046\u30a6\u30a4\u30eb\u30b9\u3092\u542b\u3093\u3060\u30a8\u30a2\u30ed\u30be\u30eb\u304c\u611f\u67d3\u62e1\u5927\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u30de\u30b9\u30af\u3084\u63db\u6c17\u3001\u7a7a\u6c17\u6e05\u6d44\u6a5f\u306a\u3069\u304c\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u672c\u7814\u7a76\u3067\u306f\u5225\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u6ce8\u76ee\u3057\u307e\u3057\u305f\u3002\u305d\u308c\u306f\u3001<strong>\u300c\u9ad8\u6e29\u7a7a\u6c17\u306b\u3088\u308b\u77ac\u9593\u52a0\u71b1\u300d<\/strong>\u3067\u3059\u3002 <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Hidekazu Nishimura\u3089\u306f\u3001\u5bb6\u5ead\u7528\u30d5\u30a1\u30f3\u30d2\u30fc\u30bf\u30fc\u3092\u6a21\u64ec\u3057\u305f\u5b9f\u9a13\u88c5\u7f6e\u3092\u958b\u767a\u3057\u3001\u30a4\u30f3\u30d5\u30eb\u30a8\u30f3\u30b6\u30a6\u30a4\u30eb\u30b9\u3092\u542b\u3080\u30a8\u30a2\u30ed\u30be\u30eb\u3092\u9ad8\u6e29\u6d41\u8def\u3078\u901a\u904e\u3055\u305b\u307e\u3057\u305f\u3002 \u30a6\u30a4\u30eb\u30b9\u306f\u300180\uff5e180\u2103\u306e\u52a0\u71b1\u7a7a\u6c17\u306b\u66dd\u9732\u3055\u308c\u3001\u66dd\u9732\u6642\u9593\u306f\u30010.12\u79d2\uff5e0.36\u79d2\u3068\u3044\u3046\u975e\u5e38\u306b\u77ed\u3044\u6761\u4ef6\u3067\u8a55\u4fa1\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u8208\u5473\u6df1\u304b\u3063\u305f\u306e\u306f\u3001<strong>180\u2103\u30670.25\u79d2<\/strong>\u306e\u6761\u4ef6\u3067\u3001\u611f\u67d3\u6027\u3092\u6301\u3064\u30a4\u30f3\u30d5\u30eb\u30a8\u30f3\u30b6\u30a6\u30a4\u30eb\u30b9\u304c\u7d041000\u5206\u306e1\u307e\u3067\u6e1b\u5c11\u3057\u305f\u3053\u3068\u3067\u3059\u3002\u307e\u305f\u3001<strong>150\u2103\u30670.36\u79d2<\/strong>\u3067\u3082\u7d04100\u5206\u306e1\u7a0b\u5ea6\u307e\u3067\u6e1b\u5c11\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3067\u30a6\u30a4\u30eb\u30b9RNA\u91cf\u306f\u6bd4\u8f03\u7684\u7dad\u6301\u3055\u308c\u3066\u304a\u308a\u3001\u30a6\u30a4\u30eb\u30b9\u7c92\u5b50\u305d\u306e\u3082\u306e\u304c\u6d88\u5931\u3057\u305f\u306e\u3067\u306f\u306a\u304f\u3001<strong>\u611f\u67d3\u80fd\u529b\u304c\u5931\u308f\u308c\u305f<\/strong>\u3053\u3068\u304c\u793a\u5506\u3055\u308c\u307e\u3057\u305f\u3002 <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u7814\u7a76\u306e\u7279\u5fb4\u306f\u3001<strong>\u300c\u30b5\u30d6\u79d2\uff081\u79d2\u672a\u6e80\uff09\u306e\u9ad8\u6e29\u66dd\u9732\u306b\u3088\u308b\u7a7a\u6c17\u4e2d\u30a6\u30a4\u30eb\u30b9\u4e0d\u6d3b\u5316\u300d<\/strong>\u3092\u5b9a\u91cf\u7684\u306b\u8a55\u4fa1\u3057\u305f\u70b9\u306b\u3042\u308a\u307e\u3059\u3002 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a6\u30a4\u30eb\u30b9\u6db2\u6ef4\u3092\u52a0\u71b1\u3059\u308b\u7814\u7a76\u306f\u591a\u304f\u3042\u308a\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u7a7a\u6c17\u4e2d\u3092\u6d6e\u904a\u3059\u308b\u30a8\u30a2\u30ed\u30be\u30eb\u72b6\u614b\u306e\u30a6\u30a4\u30eb\u30b9\u3092\u5bfe\u8c61\u3068\u3057\u305f\u7814\u7a76\u306f\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002 \u672c\u7814\u7a76\u306f\u3001\u7a7a\u8abf\u6a5f\u5668\u3001\u30d5\u30a1\u30f3\u30d2\u30fc\u30bf\u30fc\u3001\u7a7a\u6c17\u6bba\u83cc\u88c5\u7f6e\u3001\u5c06\u6765\u306e\u611f\u67d3\u75c7\u5bfe\u7b56\u30b7\u30b9\u30c6\u30e0\u3001\u306a\u3069\u306e\u958b\u767a\u306b\u6709\u7528\u306a\u57fa\u790e\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8ad6\u6587\u60c5\u5831<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hidekazu Nishimura, Masanori Katsumi, Tomoyuki Suzuki et al.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inactivation of Airborne Influenza Viruses by Transient Heating for Sub-Second: One-Pass Analyses Using a Fan Heater Simulator<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Earozoru Kenkyu<\/em>, Vol.40, No.1, pp.28-35 (2025) <a href=\"https:\/\/doi.org\/10.11203\/jar.40.28\">https:\/\/doi.org\/10.11203\/jar.40.28<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Can Heat Neutralize Airborne Viruses in Less Than a Second?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Airborne transmission plays an important role in the spread of influenza and COVID-19. While face masks, ventilation, and air cleaners are widely used, this study explored a different strategy: <strong>rapid thermal inactivation of airborne viruses.<\/strong> <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Hidekazu Nishimura and colleagues developed a fan-heater simulator and exposed influenza-virus-laden aerosols to heated airflow. The aerosols were subjected to:  80\u00b0C &#8211; 180\u00b0C for extremely short residence times of: 0.12 &#8211; 0.36 s. <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Key Findings<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Exposure to <strong>180\u00b0C for only 0.25 seconds<\/strong> reduced the amount of infectious influenza virus by approximately three orders of magnitude. At <strong>150\u00b0C for 0.36 seconds<\/strong>, the reduction was about two orders of magnitude. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Interestingly, viral RNA levels remained relatively stable, suggesting that the viruses were primarily inactivated rather than physically destroyed.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Why Is This Study Important?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most previous thermal-disinfection studies focused on viruses in liquids or droplets. This work directly investigated <strong>airborne influenza viruses<\/strong> exposed to high-temperature airflow under realistic aerosol conditions. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The results provide useful guidance for: air-cleaning systems, HVAC technologies, thermal disinfection devices, future infection-control engineering, and highlight the potential of thermal treatment as a complementary strategy for airborne pathogen control. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"781\" height=\"453\" src=\"https:\/\/jaast.jp\/wp-content\/uploads\/2026\/09\/image-2.png\" alt=\"\" class=\"wp-image-1451\" srcset=\"https:\/\/jaast.jp\/wp-content\/uploads\/2026\/09\/image-2.png 781w, https:\/\/jaast.jp\/wp-content\/uploads\/2026\/09\/image-2-300x174.png 300w, https:\/\/jaast.jp\/wp-content\/uploads\/2026\/09\/image-2-767x445.png 767w\" sizes=\"auto, (max-width: 781px) 100vw, 781px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u306f\u300e\u30a8\u30a2\u30ed\u30be\u30eb\u7814\u7a76\u300f\u63b2\u8f09\u8ad6\u6587\u3092\u5e83\u304f\u7d39\u4ecb\u3059\u308b\u305f\u3081\u3001\u65e5\u672c\u30a8\u30a2\u30ed\u30be\u30eb\u5b66\u4f1a\uff08JAAST\uff09\u304c\u4f5c\u6210\u3057\u305f\u89e3\u8aac\u8a18\u4e8b\u3067\u3059\u3002\u751f\u6210AI\u3092\u7de8\u96c6\u88dc\u52a9\u30c4\u30fc\u30eb\u3068\u3057\u3066\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5185\u5bb9\u306f\u539f\u8457\u8ad6\u6587\u306b\u57fa\u3065\u304d\u3001\u5b66\u4f1a\u62c5\u5f53\u8005\u304c\u78ba\u8a8d\u30fb\u7de8\u96c6\u3057\u3066\u3044\u307e\u3059\u3002\u7814\u7a76\u5185\u5bb9\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u539f\u8457\u8ad6\u6587\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<em>This article was prepared by the Japan Association of Aerosol Science and Technology (JAAST) to introduce research published in<\/em> Earozoru Kenkyu. <em>Generative AI was used as an editorial support tool. The content has been reviewed and edited by JAAST and is based on the original research paper. Readers are encouraged to consult the original article for full scientific details.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7814\u7a76\u306e\u7279\u5fb4\u306f\u3001\u300c\u30b5\u30d6\u79d2\uff081\u79d2\u672a\u6e80\uff09\u306e\u9ad8\u6e29\u66dd\u9732\u306b\u3088\u308b\u7a7a\u6c17\u4e2d\u30a6\u30a4\u30eb\u30b9\u4e0d\u6d3b\u5316\u300d\u3092\u5b9a\u91cf\u7684\u306b\u8a55\u4fa1\u3057\u305f\u70b9\u306b\u3042\u308a\u307e\u3059\u3002Exposure to 180\u00b0C for only 0.25 seconds reduced the amount of infectious influenza virus by approximately three orders of magnitude. At 150\u00b0C for 0.36 seconds, the reduction was about two orders of magnitude.<\/p>\n","protected":false},"author":8,"featured_media":1451,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[37],"tags":[57],"class_list":["post-1450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-paper","tag-virus"],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/jaast.jp\/wp-content\/uploads\/2026\/09\/image-2.png","_links":{"self":[{"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/posts\/1450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/jaast.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1450"}],"version-history":[{"count":2,"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/posts\/1450\/revisions"}],"predecessor-version":[{"id":1453,"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/posts\/1450\/revisions\/1453"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jaast.jp\/index.php?rest_route=\/wp\/v2\/media\/1451"}],"wp:attachment":[{"href":"https:\/\/jaast.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jaast.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jaast.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}