{"690204":{"#nid":"690204","#data":{"type":"news","title":"What It\u2019s Like to Be the Human in Mosquito Research ","body":[{"value":"\u003Cdiv\u003E\u003Cp\u003EChristopher Zuo never thought of himself as someone mosquitoes singled out. They bit him from time to time, he said, but no more than anyone else who spent a lot of time outdoors.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cI don\u2019t know if I would say I\u2019m prone,\u201d Zuo said. \u201cI do get bitten, but I also think that\u2019s partly because I\u2019m just outside a lot more.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EHowever, that assumption did not hold up once he stepped inside a sealed mosquito chamber as part of a Georgia Tech research study.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EZuo, a Georgia Tech alum and co-author on \u003Ca href=\u0022https:\/\/www.science.org\/doi\/10.1126\/sciadv.adz7063\u0022 rel=\u0022noreferrer noopener\u0022 target=\u0022_blank\u0022\u003Ethe study\u003C\/a\u003E, worked alongside Georgia Tech faculty member \u003Ca href=\u0022https:\/\/www.me.gatech.edu\/faculty\/hu\u0022 rel=\u0022noreferrer noopener\u0022 target=\u0022_blank\u0022\u003EDavid Hu\u003C\/a\u003E and researchers in Hu\u2019s fluid dynamics lab \u2014 and co-authors Chenyi Fei, Alex Cohen, Jorn Dunkel from the Massachusetts Institute of Technology \u2014 on a multi-year effort to understand how mosquitoes locate people. Using high-speed cameras, careful controls, and mathematical modeling, the research examined how mosquitoes respond to carbon dioxide and visual cues. To confirm whether the data reflected real-world behavior, the team needed a human subject.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EZuo volunteered.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EBefore entering the chamber, he knew the mosquitoes were safe. They had been raised in a laboratory environment and were carefully controlled, making the experiment safer than being outdoors during peak mosquito activity.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cWe knew exactly how all of these mosquitoes were reared, so we knew they\u2019re disease-free,\u201d he said. \u201cHonestly, even if I got bitten 100 plus times, the actual danger that I was in was very little.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EWearing a mesh suit, Zuo stood nearly motionless inside the chamber while mosquitoes were released and flew freely around him. Any movement could disrupt the data, so remaining still was critical even as mosquitoes gathered close to his face and upper body.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EThe response was immediate.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cYou release the mosquitoes, and they\u2019re already on top of you,\u201d Zuo said. \u201cAlmost felt like it was instant.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EWhat surprised him most was not the bites but the sound.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cI didn\u2019t realize how loud they were,\u201d he said. \u201cWhen they\u2019re flying around your head, it\u2019s that annoying buzzing sound. I didn\u2019t realize how annoying it can get with just enough mosquitoes flying around.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EThe experience was not limited to a single trial. Zuo entered the chamber multiple times as the research progressed, testing different variables including posture, clothing, and body positioning. In some experiments, he was required to hold his arms extended so cameras could capture a consistent silhouette.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cIt felt more like an exercise at the gym,\u201d Zuo said. \u201cI was very much more focused on keeping my arms up and being as still as possible.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EAcross those repeated interactions, patterns emerged that closely matched what the data predicted. Mosquitoes found him quickly, clustered in specific areas, and lingered only when certain conditions aligned.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u201cAnd once the conditions were right,\u201d Zuo said, \u201cthey stayed.\u201d\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EZuo\u2019s role helped bridge the gap between abstract modeling and human experience. It also challenged common assumptions about mosquito behavior that many people take for granted.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EWhat follows are some of the most common mosquito myths, and what the Georgia Tech research and Zuo\u2019s firsthand experience actually showed.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Ch3\u003E\u003Cstrong\u003EMosquito Myths vs. Reality\u003C\/strong\u003E\u0026nbsp;\u003C\/h3\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cstrong\u003EMyth: Mosquitoes swarm because they are following each other.\u003C\/strong\u003E\u0026nbsp;\u003Cbr\u003E\u003Cstrong\u003EReality:\u003C\/strong\u003E Mosquitoes respond independently to the same cues, which creates the appearance of swarming.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003ETrajectory data collected during the experiments showed no evidence that mosquitoes were coordinating or communicating with one another. Zuo explained that what people often describe as swarming is the result of multiple mosquitoes responding simultaneously to the same environmental signals. When carbon dioxide and a clear visual target are present, many mosquitoes converge on the same area independently. Zuo compared it to people arriving separately at the same crowded place because something there is attractive, not because they are following the crowd.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cstrong\u003EMyth: Mosquitoes randomly target different parts of the body.\u003C\/strong\u003E\u0026nbsp;\u003Cbr\u003E\u003Cstrong\u003EReality:\u003C\/strong\u003E In this study, mosquitoes concentrated near the head and shoulders, but only for the species observed, which is present in parts of the Southeast.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EThe Georgia Tech experiments focused on \u003Cem\u003EAedes aegypti \u003C\/em\u003E(dengue or yellow fever mosquito), a species found in parts of Georgia and other areas of the southeastern United States. Within that species, both trajectory data and Zuo\u2019s experience inside the chamber showed mosquitoes repeatedly clustering near the head and shoulders rather than distributing evenly across the body. Zuo observed this pattern while standing still in the mesh suit, as mosquitoes returned again and again to his upper body. The study also confirmed previous biting studies showing that \u003Cem\u003EAedes aegypti\u003C\/em\u003E mosquitoes target the upper body, while other mosquitoes might focus on other areas. Researchers linked the behavior to carbon dioxide released through breathing near the mouth and nose, paired with a strong visual target. Zuo emphasized that other mosquito species behave differently and that these findings should not be applied to all mosquitoes.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cstrong\u003EMyth: Carbon dioxide alone explains why mosquitoes find people.\u003C\/strong\u003E\u0026nbsp;\u003Cbr\u003E\u003Cstrong\u003EReality:\u003C\/strong\u003E Carbon dioxide and visual cues work together, and neither is enough on its own.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EZuo described experiments that isolated carbon dioxide using inanimate objects before introducing a human subject. Carbon dioxide alone helped mosquitoes locate the general area of a target but did not consistently keep them there. Visual cues alone helped mosquitoes recognize an object but did not hold their attention. When both signals were combined, mosquito behavior changed significantly. The research showed the response was nonlinear, meaning the combined effect was stronger than simply adding the two cues together.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cstrong\u003EMyth: Once mosquitoes find a target, they always stay nearby.\u003C\/strong\u003E\u0026nbsp;\u003Cbr\u003E\u003Cstrong\u003EReality:\u003C\/strong\u003E Mosquitoes do not linger unless conditions align.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EThe data showed that mosquitoes often passed by targets unless both carbon dioxide and visual signals were present at the same time. Zuo observed that once those conditions aligned during the mesh suit experiments, mosquitoes stayed close and returned repeatedly to the same areas. Without the full set of cues, they were less likely to remain focused on a target.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cstrong\u003EMyth: All mosquitoes behave the same way.\u003C\/strong\u003E\u0026nbsp;\u003Cbr\u003E\u003Cstrong\u003EReality:\u003C\/strong\u003E Mosquito behavior varies by species and environmental conditions.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u003Cem\u003EAedes aegypti\u003C\/em\u003E, Zuo described, are capable of feeding in well-lit conditions rather than relying solely on dusk. He contrasted this with \u003Cem\u003EAnopheles\u003C\/em\u003E (marsh) mosquitoes, which require darker conditions and are closely tied to light and dark cycles during experiments. Zuo emphasized that the findings reflect the behavior of a single species and that different mosquito species respond to different cues.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Ch3\u003E\u003Cstrong\u003EWhat the CDC Recommends During Mosquito Season\u003C\/strong\u003E\u0026nbsp;\u003C\/h3\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EWhile the Georgia Tech research explains how mosquitoes locate people, the \u003Ca href=\u0022https:\/\/www.cdc.gov\/mosquitoes\/prevention\/index.html\u0022 rel=\u0022noreferrer noopener\u0022 target=\u0022_blank\u0022\u003ECenters for Disease Control and Prevention\u003C\/a\u003E (CDC) outlines steps people can take during mosquito season to reduce the risk of bites.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E\u003Cdiv\u003E\u003Cp\u003EThe CDC recommends using \u003Ca href=\u0022https:\/\/www.epa.gov\/insect-repellents\u0022 rel=\u0022noreferrer noopener\u0022 target=\u0022_blank\u0022\u003EEnvironmental Protection Agency-registered insect repellents\u003C\/a\u003E on exposed skin and wearing loose-fitting, long-sleeved shirts and long pants. Clothing and gear can also be treated with permethrin, which is designed for use on fabrics and not directly on skin. The agency also advises controlling mosquitoes indoors and outdoors by eliminating standing water and keeping window and door screens in good repair. The CDC notes that mosquitoes can bite during the day or night, depending on the species, and encourages precautions whenever mosquitoes are active.\u0026nbsp;\u003C\/p\u003E\u003C\/div\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cdiv\u003EStanding still inside a sealed mosquito chamber, Georgia Tech student and alum Christopher Zuo became the human test subject behind the science, offering a firsthand look at how mosquitoes find and fixate on people when breath and visual cues collide.\u003C\/div\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"The science behind the buzz, as told by the guy who stood still. "}],"uid":"35797","created_gmt":"2026-05-08 17:48:26","changed_gmt":"2026-05-08 18:04:23","author":"Siobhan Rodriguez","boilerplate_text":"","field_publication":"","field_article_url":"","location":"Atlanta, GA","dateline":{"date":"2026-05-08T00:00:00-04:00","iso_date":"2026-05-08T00:00:00-04:00","tz":"America\/New_York"},"extras":[],"hg_media":{"680238":{"id":"680238","type":"image","title":"IMG_1500.jpeg","body":null,"created":"1778262537","gmt_created":"2026-05-08 17:48:57","changed":"1778262537","gmt_changed":"2026-05-08 17:48:57","alt":"image of Chris Zuo in a mesh mosquito suit","file":{"fid":"264482","name":"IMG_1500.jpeg","image_path":"\/sites\/default\/files\/2026\/05\/08\/IMG_1500.jpeg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/05\/08\/IMG_1500.jpeg","mime":"image\/jpeg","size":1836258,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/05\/08\/IMG_1500.jpeg?itok=o87xp0fP"}},"680239":{"id":"680239","type":"image","title":"file-20260316-57-8quhxt.jpg","body":"\u003Cp\u003ESome of Chris Zuo\u2019s itchy results after his session with the mosquitoes.\u003C\/p\u003E","created":"1778262756","gmt_created":"2026-05-08 17:52:36","changed":"1778262756","gmt_changed":"2026-05-08 17:52:36","alt":"Image of Chris Zuo\u0027s arm after an experiment","file":{"fid":"264483","name":"file-20260316-57-8quhxt.jpg","image_path":"\/sites\/default\/files\/2026\/05\/08\/file-20260316-57-8quhxt.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/05\/08\/file-20260316-57-8quhxt.jpg","mime":"image\/jpeg","size":159199,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/05\/08\/file-20260316-57-8quhxt.jpg?itok=2Jo2IT7K"}},"680240":{"id":"680240","type":"image","title":"file-20260317-57-gbcbz7.jpg","body":"\u003Cp\u003EThe team visualized the mosquito trajectories as they flew around Zuo.\u003C\/p\u003E","created":"1778262869","gmt_created":"2026-05-08 17:54:29","changed":"1778262869","gmt_changed":"2026-05-08 17:54:29","alt":"mosquito trajectory around Chris Zuo","file":{"fid":"264484","name":"file-20260317-57-gbcbz7.jpg","image_path":"\/sites\/default\/files\/2026\/05\/08\/file-20260317-57-gbcbz7.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/05\/08\/file-20260317-57-gbcbz7.jpg","mime":"image\/jpeg","size":987262,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/05\/08\/file-20260317-57-gbcbz7.jpg?itok=rEqOpCxG"}}},"media_ids":["680238","680239","680240"],"related_links":[{"url":"https:\/\/coe.gatech.edu\/news\/2026\/03\/why-mosquitoes-swarm-your-head-theyre-following-signals-not-each-other","title":"Why Mosquitoes Swarm Your Head: They\u2019re Following Signals, Not Each Other"},{"url":"https:\/\/research.gatech.edu\/hundreds-hungry-mosquitoes-student-volunteer-and-mesh-suit","title":"Hundreds of Hungry Mosquitoes, a Student Volunteer and a Mesh Suit"}],"groups":[{"id":"1214","name":"News Room"}],"categories":[{"id":"138","name":"Biotechnology, Health, Bioengineering, Genetics"},{"id":"145","name":"Engineering"},{"id":"154","name":"Environment"},{"id":"129","name":"Institute and Campus"}],"keywords":[{"id":"195108","name":"mosquito research"},{"id":"109","name":"Georgia Tech"},{"id":"193225","name":"student researcher"},{"id":"28201","name":"Alum"},{"id":"195109","name":"human test subject"},{"id":"195110","name":"mosquito chamber experiment"},{"id":"195111","name":"mosquito behavior"},{"id":"195112","name":"carbon dioxide cues"},{"id":"195113","name":"visual cues"},{"id":"195114","name":"breathing signals"},{"id":"195115","name":"mosquito attraction"},{"id":"195116","name":"Aedes aegypti"},{"id":"195117","name":"Southeast United States mosquitoes"},{"id":"195118","name":"fluid dynamics research"},{"id":"195119","name":"applied physics"},{"id":"249","name":"Biomedical Engineering"},{"id":"195120","name":"high-speed imaging"},{"id":"10825","name":"Mathematical Modeling"},{"id":"195121","name":"trajectory 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Communications\u0026nbsp;\u003C\/p\u003E","format":"limited_html"}],"email":["media@gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}