{"id":169158,"date":"2026-04-13T16:03:17","date_gmt":"2026-04-13T15:03:17","guid":{"rendered":"https:\/\/m3globalresearch.blog\/?p=169158"},"modified":"2026-04-13T16:03:17","modified_gmt":"2026-04-13T15:03:17","slug":"hospital-antiseptic-lingers-surfaces-promoting-bacterial-tolerance","status":"publish","type":"post","link":"https:\/\/www.m3globalresearch.com\/blog\/hospital-antiseptic-lingers-surfaces-promoting-bacterial-tolerance\/","title":{"rendered":"Hospital Antiseptic Lingers on Surfaces, Promoting Bacterial Tolerance","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"169158\" class=\"elementor elementor-169158\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ea708ae e-flex e-con-boxed e-con e-parent\" data-id=\"ea708ae\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b4981c1 elementor-widget elementor-widget-text-editor\" data-id=\"b4981c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tTraces of a widely used hospital antiseptic remain on surfaces long enough to help bacteria develop tolerance, according to a study from Northwestern University published in <em>Environmental Science &amp; Technology<\/em>.\n<br><br>\nChlorhexidine has been a cornerstone of hospital infection control since the 1950s, used for patient bathing, surgical skin preparation, equipment sterilisation, and hand washing. However, researchers found the chemical persists in the environment after application.\n<br><br>\nLaboratory experiments showed chlorhexidine residue remained on common hospital materials, plastic, metal, and laminate, for more than 24 hours after cleaning with standard disinfectants. Whilst these residue levels were too low to kill bacteria, they were sufficient to expose microbes to the chemical, potentially allowing survivors to develop tolerance.\n<br><br>\nThe team conducted an environmental survey in a medical intensive care unit, collecting nearly 200 samples from bed rails, keyboards, door sills, light switches, and sink drains. From these samples, researchers isolated over 1,400 bacteria, with approximately 36% exhibiting some level of chlorhexidine tolerance.\n<br><br>\nSink drains emerged as particular hotspots, containing far higher bacterial levels than dry surfaces, including strains tolerating much higher chlorhexidine concentrations. Researchers noted that running water generates aerosols with potential for re-exposure.\n<br><br>\nUnexpectedly, bacteria with signs of chlorhexidine tolerance were also found on door-sill samples, surfaces people rarely touch, suggesting bacteria may travel on airborne particles such as dead skin cells.\n<br><br>\nLead author Professor Erica Hartmann emphasised that chlorhexidine remains necessary and effective in clinical settings but cautioned that homes and offices rarely require disinfection. She recommended using plain soap and water outside healthcare environments to help prevent antimicrobial resistance.\n<br><br>\n<strong>Source:<\/strong> News Medical \/ Northwestern University (Environmental Science &amp; Technology, 2026)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a850efb e-con-full e-flex e-con e-child\" data-id=\"a850efb\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49cefc7 elementor-share-buttons--view-icon elementor-share-buttons--skin-minimal elementor-share-buttons--shape-circle elementor-share-buttons--color-custom elementor-grid-0 elementor-widget elementor-widget-share-buttons\" data-id=\"49cefc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"share-buttons.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-grid\" role=\"list\">\n\t\t\t\t\t\t\t\t<div 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8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63c0889 e-flex e-con-boxed e-con e-parent\" data-id=\"63c0889\" 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research<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":169246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3200],"tags":[3605],"class_list":["post-169158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-latest-medical-news","tag-infectious-diseases"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Hospital Antiseptic Lingers on Surfaces, Promoting Bacterial Tolerance<\/title>\n<meta name=\"description\" content=\"Study finds hospital antiseptic residues may drive bacteria tolerance on surfaces, with new insights from Northwestern University research\" \/>\n<meta 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