{"id":75457,"date":"2024-12-04T08:00:00","date_gmt":"2024-12-04T13:00:00","guid":{"rendered":"https:\/\/thestoryexchange.org\/?p=75457"},"modified":"2025-01-08T18:35:55","modified_gmt":"2025-01-08T23:35:55","slug":"wildfires-spread-disease-onja-davidson-raoelison","status":"publish","type":"post","link":"https:\/\/thestoryexchange.org\/wildfires-spread-disease-onja-davidson-raoelison\/","title":{"rendered":"Beyond Fire and Smoke, Wildfires Might Just Spread Disease, Too"},"content":{"rendered":"<div class='storyblock storyblock-widest'>\r\n<div id=\"block_69ce8eeea95e99c0fdf91b0a6fc381f4\"\r\n    class=\"block-standout-header text-image aspect-1-1 \">\r\n\r\n    <div class=\"standout-header-inner none\">\r\n        <div class=\"standout-header-image\">\r\n                            <img decoding=\"async\" style=\"\" src=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/onja.jpg\" alt=\"Onja Davidson Raoelison\"\r\n                    class=\"img-fluid\" \/>\r\n                                    <p class=\"caption\">Onja Davidson Raoelison is a postdoctoral fellow at Stanford University\u2019s King Center on Global Development. (Credit: Onja Davidson Raoelison)<\/p>\r\n                                    <\/div>\r\n\r\n        <div class=\"standout-header-text\">\r\n            \r\n                            <h1 class=\"entry-title\">Beyond Fire and Smoke, Wildfires Might Just Spread Disease, Too<\/h1>\r\n            \r\n            <p>In California, Onja Davidson Raoelison is studying how extreme events like wildfires may spread pathogens through the water and air, a potential threat to human health.<\/p>\n\r\n\r\n            <div class=\"entry-meta\">\r\n                <time class=\"updated\" datetime=\"2024-12-04T13:00:00+00:00\">December 4, 2024<\/time>\r\n\r\n                                                    <div class=\"author-meta\">\r\n                        <div class=\"author_thumbnail\">\r\n                                                                                        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/userphoto\/156.jpg\" alt=\"Heather Hansen\" width=\"150\" height=\"142\" class=\"photo\" \/>\r\n                                                    <\/div>\r\n                        <span>\r\n                            <span class='by'>By <\/span>\r\n                            <a href=\"https:\/\/thestoryexchange.org\/author\/heather-hansen\" title=\"Visit Heather Hansen&#8217;s website\" rel=\"author external\">Heather Hansen<\/a>\r\n                        <\/span>\r\n                    <\/div>\r\n                            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\r\n\r\n<style>\r\n    #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header {\r\n        width: 100%;\r\n    }\r\n\r\n    #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-inner {\r\n        display: flex;\r\n        flex-direction: column;\r\n        width: 100%;\r\n        gap: 1.5rem;\r\n    }\r\n\r\n    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.entry-meta>*:not(:last-child) {\r\n            border-right: 1px solid #333;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-inner.dark {\r\n            background: #111;\r\n            gap: 0.5rem;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-inner.dark * {\r\n            color: #eee !important;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-inner.dark .standout-header-text .entry-meta>*:not(:last-child) {\r\n            border-right: 1px solid #eee;\r\n        }\r\n    }\r\n\r\n    @media (min-width: 1200px) {\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-image img {\r\n            aspect-ratio: auto;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header.aspect-4-3 .standout-header-image img {\r\n            aspect-ratio: 4\/3;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header.aspect-16-9 .standout-header-image img {\r\n            aspect-ratio: 16\/9;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header.aspect-1-1 .standout-header-image img {\r\n            aspect-ratio: 1\/1;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header.aspect-9-16 .standout-header-image img {\r\n            aspect-ratio: 9\/16;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-text {\r\n            \/*margin-top: -2.5rem;*\/\r\n            flex-grow: 5;\r\n        }\r\n\r\n        #block_69ce8eeea95e99c0fdf91b0a6fc381f4.block-standout-header .standout-header-image {\r\n            flex-grow: 4;\r\n        }\r\n    }\r\n<\/style><\/div>\n\n\n<p><em>Editor&#8217;s note: We&#8217;re reposting this article, published last month, in light of the California wildfires. The subject is a winner of our 2024 <a href=\"https:\/\/thestoryexchange.org\/2024-women-in-science-incentive-prize-winners\/\">Women In Science Incentive Prize<\/a>. <\/em><\/p>\n\n\n\n<p>Growing up in France, Onja Davidson Raoelison often returned with her parents to Madagascar, where she was born. Renowned for its extraordinary biodiversity, the country is also notorious for its lack of clean drinking <a href=\"https:\/\/thestoryexchange.org\/listen-to-water-women-podcast\/\">water<\/a>. Raoelison\u2019s physician parents taught residents there how to treat contaminated groundwater to prevent illness and death. Raoelison, now an environmental engineer, was motivated by those experiences to use science to improve lives in other meaningful ways.<\/p>\n\n\n\n<p>\u201cI was very interested in helping marginalized communities and low-income communities because I wanted to provide clean water to drink and also clean air to breathe,\u201d she says. \u201cThat is the passion that still drives me.\u201d Raoelison, whose first name means \u201cwaves\u201d in Malagasy, brought that lifelong interest with her to California to pursue graduate studies, first at University of California, Los Angeles, where she earned a master\u2019s degree and PhD, and now at Stanford\u2019s King Center on Global Development as a postdoctoral fellow.<\/p>\n\n\n\n<p>When she moved to California in 2018, Raoelison experienced the effects of wildfire firsthand when poor air quality kept residents indoors for days at a time. Fires were new to her, and the state\u2019s dry climate was a stark contrast to Madagascar\u2019s tropical one. Yet she drew parallels in terms of water quality. Wildfires, typically linked with poor air quality, also have a lasting impact on water quality, as the loss of vegetation and soil can lead to sediment, ash and pollutants flowing into &#8220;surface&#8221; water \u2013 any water that&#8217;s above ground \u2013 like streams, lakes and reservoirs.&nbsp;<\/p>\n\n\n<div id=\"block_2d5ee80661a2d4ae3cb69c2e2bd1afd6\" class=\"wp-block related-post alignwide\">\n      <div class=\"wrap\">\n    <div class=\"section-title\">\n      <h4>Related<\/h4>\n    <\/div>\n    \n    <div class=\"post-wrap\">\n              <div class=\"thumbnail\">\n          <a href=\"https:\/\/thestoryexchange.org\/2024-women-in-science-incentive-prize-winners\/\" class=\"post-image-link\">\n            <img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/09\/2018_California_Wildfires-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/09\/2018_California_Wildfires-150x150.jpg 150w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/09\/2018_California_Wildfires-96x96.jpg 96w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/09\/2018_California_Wildfires-84x84.jpg 84w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/09\/2018_California_Wildfires-45x45.jpg 45w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>\n          <\/a>\n        <\/div>\n            <div class=\"entry-text\">\n          <h3 class=\"post-title\">\n            <a href=\"https:\/\/thestoryexchange.org\/2024-women-in-science-incentive-prize-winners\/\">\n              Announcing Our Women In Science Incentive Prize Winners\n            <\/a>\n          <\/h3>\n      <\/div>\n    <\/div>\n\n        <\/div>\n    <\/div>\n\n\n<p>At UCLA, Raoelison focused on reducing negative effects of wildfires on surface water quality by designing climate-resilient stormwater treatment systems. \u201cI\u2019m still very interested in providing safe water to people, and that\u2019s why I got involved with water quality research,\u201d she says. \u201cAs an engineer, I thought, \u2018We have to find a solution to mitigate this impact.\u2019\u201d It was an ambitious project, says Raoelison, \u201cbut I was very glad that my research led to some positive outcomes.\u201d She is hopeful the work will continue to inform scientists, policymakers, government agencies and the private sector downstream of fire-prone areas.<\/p>\n\n\n\n<p>At Stanford, Raoelison has expanded her research to look at the effects of wildfires on air \u2013 specifically, on the problem of pathogens in wildfire smoke. Scientists once assumed that smoke was too hot to sustain microorganisms and was therefore sterile. But, Raoelison explained, recent studies show that wildfires can spread pathogenic microbes, including bacteria and fungi, through air and water, raising new concerns about human exposure to infectious agents. It\u2019s an underexplored area that poses a significant global health threat, she said.<\/p>\n\n\n\n<p>Working with the Stanford Department of Medicine, Raoelison first wants to identify the pathogens of interest and the distance they can travel during a wildfire. Knowing how they spread and what illnesses they can cause is also key to developing effective disease control and prevention strategies, she said. Raoelison\u2019s research will inform scientists, utilities and healthcare workers and potentially influence policy regionally, nationally and even globally.&nbsp;<\/p>\n\n\n\n<p>In addition to her parents, Raoelison was inspired by her great aunt, who was nominated for a Nobel Peace Prize two decades ago for promoting gender equality in Madagascar. \u201cThat\u2019s why I also want to advocate for women,\u201d she said. Raoelison has received several awards for her own commitment to supporting women and minorities in science. Through leadership and outreach, she wants to inspire girls to do anything they want to, including in male-dominated fields. \u201cIt\u2019s intimidating, and some women don\u2019t think that they can do things because we only see men there,\u201d she said. \u201cIt\u2019s very hard as a woman to have a voice and to express yourself, but it\u2019s important for me to do that.\u201d &#x25fc;&#xfe0f;<\/p>\n\n\n<div id=\"block_937ddaa7d3e37cff65ca99c73a2ef6c1\" class=\"wp-block related-post alignwide\">\n      <div class=\"wrap\">\n    <div class=\"section-title\">\n      <h4>Related<\/h4>\n    <\/div>\n    \n    <div class=\"post-wrap\">\n              <div class=\"thumbnail\">\n          <a href=\"https:\/\/thestoryexchange.org\/karuk-tribe-climate-danielle-touma\/\" class=\"post-image-link\">\n            <img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/danielletouma-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"Danielle Touma\" srcset=\"https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/danielletouma-150x150.jpg 150w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/danielletouma-96x96.jpg 96w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/danielletouma-84x84.jpg 84w, https:\/\/thestoryexchange.org\/wp-content\/uploads\/2024\/12\/danielletouma-45x45.jpg 45w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/>\n          <\/a>\n        <\/div>\n            <div class=\"entry-text\">\n          <h3 class=\"post-title\">\n            <a href=\"https:\/\/thestoryexchange.org\/karuk-tribe-climate-danielle-touma\/\">\n              Helping the Karuk Tribe in California Prepare for Climate Challenges\n            <\/a>\n          <\/h3>\n      <\/div>\n    <\/div>\n\n        <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>In California, Onja Davidson Raoelison is studying how extreme events like wildfires may spread pathogens through the water and air, a potential threat to human health.<\/p>\n","protected":false},"author":156,"featured_media":75685,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"autoblue_enabled":false,"autoblue_custom_message":"","autoblue_shares":[],"autoblue_post_url":"","footnotes":""},"categories":[187],"tags":[20279,20437,19479,19723],"class_list":["post-75457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","tag-environmental-science","tag-public-health","tag-women-in-science","tag-women-in-stem"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Beyond Fire and Smoke, Wildfires Might Just Spread Disease, Too<\/title>\n<meta name=\"description\" content=\"In California, Onja Davidson Raoelison is studying how extreme events like wildfires may spread pathogens through the water and air, a potential threat to human health.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thestoryexchange.org\/wildfires-spread-disease-onja-davidson-raoelison\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Beyond Fire and Smoke, Wildfires Might Just Spread Disease, Too\" \/>\n<meta property=\"og:description\" content=\"In California, Onja Davidson Raoelison is studying how extreme events like wildfires may spread pathogens through the water and air, a potential threat to human health.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thestoryexchange.org\/wildfires-spread-disease-onja-davidson-raoelison\/\" \/>\n<meta property=\"og:site_name\" content=\"The Story 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