{"689055":{"#nid":"689055","#data":{"type":"news","title":"Hundreds of Hungry Mosquitoes, a Student Volunteer and a Mesh Suit","body":[{"value":"\u003Cdiv class=\u0022theconversation-article-body\u0022\u003E\u003Cp\u003E\u201cFour minutes is too long.\u201d\u003C\/p\u003E\u003Cfigure class=\u0022align-right zoomable\u0022\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=1000\u0026amp;fit=clip\u0022\u003E\u003Cimg alt=\u0022Man\u0026apos;s arm with multiple pink raised welts\u0022 src=\u0022https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=237\u0026amp;fit=clip\u0022 srcset=\u0022https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=827\u0026amp;fit=crop\u0026amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=827\u0026amp;fit=crop\u0026amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=827\u0026amp;fit=crop\u0026amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=1040\u0026amp;fit=crop\u0026amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=1040\u0026amp;fit=crop\u0026amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/724202\/original\/file-20260316-57-8quhxt.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=1040\u0026amp;fit=crop\u0026amp;dpr=3 2262w\u0022 sizes=\u0022(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\u0022\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cfigcaption\u003E\u003Cspan class=\u0022caption\u0022\u003ESome of Chris Zuo\u2019s itchy results after his session with the mosquitoes.\u003C\/span\u003E \u003Cspan class=\u0022attribution source\u0022\u003EDavid L. Hu\u003C\/span\u003E\u003C\/figcaption\u003E\u003C\/figure\u003E\u003Cp\u003EThat\u2019s the note undergraduate Chris Zuo sent me along with photos of countless mosquito bites on his bare skin. This full-body massacre wasn\u2019t the result of a camping trip gone awry. He\u2019d spent that limited amount of time in a room with 100 hungry mosquitoes while wearing nothing but a mesh suit we thought would have protected him.\u003C\/p\u003E\u003Cp\u003EThus began our three-year journey trying to \u003Ca href=\u0022https:\/\/doi.org\/10.1126\/sciadv.adz7063\u0022\u003Eunderstand the behavior\u003C\/a\u003E of a deceivingly simple insect, the mosquito. It may sound like a professor\u2019s sadistic plan, but, really, we did everything by the book. Our university\u2019s institutional review board approved our procedures, making sure Chris was safe and not coerced in any way. The mosquitoes were disease-free and native to our home state of Georgia. And this session resulted in the first and last bites anyone received during the study.\u003C\/p\u003E\u003Cp\u003EBesides my role as torturer of students, \u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=pydtIvYAAAAJ\u0026amp;hl=en\u0026amp;oi=ao\u0022\u003EI\u003C\/a\u003E am an \u003Ca href=\u0022https:\/\/press.princeton.edu\/our-authors\/hu-david\u0022\u003Eauthor\u003C\/a\u003E and professor at Georgia Tech with over 20 years of experience studying the movement of animals.\u003C\/p\u003E\u003Cp\u003EMosquitoes are the \u003Ca href=\u0022https:\/\/ourworldindata.org\/deadliest-animals\u0022\u003Eworld\u2019s most dangerous animal\u003C\/a\u003E. The diseases they carry, \u003Ca href=\u0022https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/malaria\u0022\u003Efrom malaria\u003C\/a\u003E \u003Ca href=\u0022https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/dengue-and-severe-dengue\u0022\u003Eto dengue\u003C\/a\u003E, cause over \u003Ca href=\u0022https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/vector-borne-diseases\u0022\u003E700,000 deaths per year\u003C\/a\u003E. More people have died from mosquitoes than wars.\u003C\/p\u003E\u003Cp\u003EThe world \u003Ca href=\u0022https:\/\/www.nytimes.com\/2023\/09\/29\/health\/mosquitoes-malaria-strategies-house.html\u0022\u003Espends US$22 billion per year\u003C\/a\u003E on billions of liters of insecticides, millions of pounds of larvicides, and millions of insecticide-treated bed nets \u2013 all to fight a tiny insect that weighs 10 times less than a grain of rice and has only \u003Ca href=\u0022https:\/\/doi.org\/10.1371\/journal.pone.0250381\u0022\u003E200,000 neurons\u003C\/a\u003E.\u003C\/p\u003E\u003Cp\u003EYet, people are losing the war on mosquitoes. These insects are evolving to \u003Ca href=\u0022https:\/\/doi.org\/10.1126\/science.aam8327\u0022\u003Ethrive in cities\u003C\/a\u003E and spreading disease \u003Ca href=\u0022https:\/\/doi.org\/10.1016\/j.pt.2017.11.006\u0022\u003Emore rapidly with climate change\u003C\/a\u003E. How can such simple animals find us so easily?\u003C\/p\u003E\u003Cp\u003EScientists know mosquitoes have terrible eyesight and depend on chemical cues to make up for it. Knowing what attracts a mosquito, though, isn\u2019t enough to predict its behavior. You can know a heat-seeking missile is drawn to heat, but you still won\u2019t know how a missile works.\u003C\/p\u003E\u003Cp\u003EEnter Chris and his self-sacrifice in the mosquito room. By tracking the flight of many mosquitoes around him, we hoped to determine how they made decisions in response to his presence. Understanding how mosquitoes respond to humans is a first step to controlling them.\u003C\/p\u003E\u003Ch2\u003EHow Mosquitoes Zero In On Their Meal\u003C\/h2\u003E\u003Cp\u003EOut of 3,500 species of mosquitoes, over 100 species are classified as anthropophilic, meaning they prefer humans for lunch. Certain species of mosquitoes will find the one person among a whole herd of cattle in order to suck human blood.\u003C\/p\u003E\u003Cp\u003EThis is quite a feat considering mosquitoes are weak flyers. They stop flying in a slight \u003Ca href=\u0022https:\/\/doi.org\/10.1242\/jeb.178905\u0022\u003E2-3 mph breeze\u003C\/a\u003E, the same air speed generated by a \u003Ca href=\u0022https:\/\/doi.org\/10.1242\/jeb.178905\u0022\u003Ehorse\u2019s swinging tail\u003C\/a\u003E. In calmer conditions, mosquitoes use their minuscule brains to follow \u003Ca href=\u0022https:\/\/doi.org\/10.1007\/s10905-022-09796-2\u0022\u003Ehuman heat, moisture and odors\u003C\/a\u003E that are carried downwind.\u003C\/p\u003E\u003Cp\u003ECarbon dioxide, the byproduct of respiration of all living animals, is particularly attractive. Mosquitoes notice carbon dioxide as well as you notice the stink of a full dumpster, detecting it up to 30 feet (9 meters) away from a host, where concentrations dip to a \u003Ca href=\u0022https:\/\/doi.org\/10.1093\/jmedent\/44.4.617\u0022\u003Efew parts per million\u003C\/a\u003E, like a few cups of dye in an Olympic-size pool.\u003C\/p\u003E\u003Cfigure class=\u0022align-center zoomable\u0022\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=1000\u0026amp;fit=clip\u0022\u003E\u003Cimg alt=\u0022Black outline of a G and T in left panel, in right panel black squiggles showing flight paths of mosquitoes around the letters\u0022 src=\u0022https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;fit=clip\u0022 srcset=\u0022https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=320\u0026amp;fit=crop\u0026amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=320\u0026amp;fit=crop\u0026amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=320\u0026amp;fit=crop\u0026amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=402\u0026amp;fit=crop\u0026amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=402\u0026amp;fit=crop\u0026amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/724198\/original\/file-20260316-57-vumrcy.png?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=402\u0026amp;fit=crop\u0026amp;dpr=3 2262w\u0022 sizes=\u0022(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\u0022\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cfigcaption\u003E\u003Cspan class=\u0022caption\u0022\u003ELike superfans, mosquitoes are drawn to the dark outline of the Georgia Tech logo.\u003C\/span\u003E \u003Cspan class=\u0022attribution source\u0022\u003EDavid L. Hu, Georgia Tech\u003C\/span\u003E\u003C\/figcaption\u003E\u003C\/figure\u003E\u003Cp\u003EMosquitoes\u2019 vision isn\u2019t much help as they hunt for their next blood meal. Their two compound eyes have several hundred individual lenses called ommatidia, each about the width of a human hair. They produce a somewhat blurry mosaic or pixelated image. Due to the laws of optics, mosquitoes can discern an adult-size human only at a few meters away. With their vision alone, they cannot distinguish a human from a small tree. They inspect every dark object.\u003C\/p\u003E\u003Ch2\u003EGathering the Flight-Path Data\u003C\/h2\u003E\u003Cp\u003EThe challenge with studying mosquito flight is that, like trash-talking teenagers, most of what they do is meaningless noise. Mosquitoes flying in an empty room are largely making random changes in flight speed and direction. We needed many flight trajectories to cut through the noise.\u003C\/p\u003E\u003Cfigure class=\u0022align-center zoomable\u0022\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=1000\u0026amp;fit=clip\u0022\u003E\u003Cimg alt=\u0022A man lying on the ground, and shown in two images on a laptop screen in the foreground\u0022 src=\u0022https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;fit=clip\u0022 srcset=\u0022https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=326\u0026amp;fit=crop\u0026amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=326\u0026amp;fit=crop\u0026amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=326\u0026amp;fit=crop\u0026amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=410\u0026amp;fit=crop\u0026amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=410\u0026amp;fit=crop\u0026amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/724200\/original\/file-20260316-57-z0f39m.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=410\u0026amp;fit=crop\u0026amp;dpr=3 2262w\u0022 sizes=\u0022(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\u0022\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cfigcaption\u003E\u003Cspan class=\u0022caption\u0022\u003EIn a mesh suit, Chris Zuo awaits the mosquitoes while questioning his life choices.\u003C\/span\u003E \u003Cspan class=\u0022attribution source\u0022\u003EDavid L. Hu, Georgia Tech\u003C\/span\u003E\u003C\/figcaption\u003E\u003C\/figure\u003E\u003Cp\u003EOne of our collaborators, University of California, Riverside, biologist \u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=XOveQssAAAAJ\u0026amp;hl=en\u0026amp;oi=ao\u0022\u003ERing Card\u00e9\u003C\/a\u003E, told us that back in the 1980s, scientists conducted \u201cbite studies\u201d by stripping down to their underwear and slapping the mosquitoes that landed on their naked bodies. He said nudity prevented confounding variables, such as the color of a shirt\u2019s fabric.\u003C\/p\u003E\u003Cp\u003EChris and I looked at each other. Sit naked and wait to become mosquito prey? Instead, we designed the mesh suit that Chris originally wore into the mosquito room. But after seeing Chris\u2019 bites, we needed a better way.\u003C\/p\u003E\u003Cp\u003EInstead, Chris washed long-sleeved clothes in unscented detergent and wore gloves and a face mask. Fully protected, Chris only had to stand and wait, while a cloud of mosquitoes swarmed him.\u003C\/p\u003E\u003Cp\u003EThe U.S. Centers for Disease Control and Prevention introduced us to the \u003Ca href=\u0022https:\/\/photonicsentry.com\/\u0022\u003EPhotonic Sentry\u003C\/a\u003E, a camera that simultaneously tracks hundreds of flying insects in a room. It records 100 frames per second at 5 mm resolution for a space like a large studio apartment. In just a few hours, Chris and another graduate student, \u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=pJLlOo8AAAAJ\u0026amp;hl=en\u0026amp;oi=sra\u0022\u003ESoohwan Kim\u003C\/a\u003E, generated more mosquito flight data than had previously been measured in human history.\u003C\/p\u003E\u003Cfigure\u003E\u003Cp\u003E\u003Ciframe width=\u0022440\u0022 height=\u0022260\u0022 src=\u0022https:\/\/www.youtube.com\/embed\/A4WUw-ZCoFk?wmode=transparent\u0026amp;start=0\u0022 frameborder=\u00220\u0022 allowfullscreen=\u0022\u0022\u003E\u003C\/iframe\u003E\u003C\/p\u003E\u003Cfigcaption\u003E\u003Cspan class=\u0022caption\u0022\u003E100 mosquitoes flying around Chris Zuo for 10 minutes. Only a fraction of tracks are shown.\u003C\/span\u003E\u003C\/figcaption\u003E\u003C\/figure\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=YJlkBuAAAAAJ\u0026amp;hl=en\u0026amp;oi=ao\u0022\u003EJ\u00f6rn Dunkel\u003C\/a\u003E, \u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=3V6dgsoAAAAJ\u0026amp;hl=en\u0026amp;oi=sra\u0022\u003EChenyi Fei\u003C\/a\u003E and \u003Ca href=\u0022https:\/\/scholar.google.com\/citations?user=89drxM4AAAAJ\u0026amp;hl=en\u0026amp;oi=sra\u0022\u003EAlex Cohen\u003C\/a\u003E, our mathematician collaborators at MIT, told us that the geometry of Chris\u2019 body was still too complicated to study the mosquitoes\u2019 reactions. Mathematicians excel at simplifying complex problems to their essence. Chenyi suggested we go easy on Chris \u2013 why not replace him with a simple dummy: a black Styrofoam ball on a stick combined with a canister of carbon dioxide.\u003C\/p\u003E\u003Cp\u003EOver the next two years, Chris filmed the mosquitoes circling the Styrofoam dummies mercilessly. Then he vacuumed up the mosquitoes, trying not to get bitten.\u003C\/p\u003E\u003Ch2\u003EDeciphering the Trajectories\u003C\/h2\u003E\u003Cp\u003EA mosquito flies like you would an airplane: it turns left or right, accelerates or hits the brakes. We determined a mosquito\u2019s flight behavior as a function of its speed, location and direction with respect to the target as the first step in creating our model of their behavior.\u003C\/p\u003E\u003Cp\u003EOur confidence in our behavioral rules increased as we read more trajectories, ultimately using 20 million mosquito positions and speeds. This idea of incorporating observations to support a mathematical hypothesis is a 200-year-old idea called \u003Ca href=\u0022https:\/\/medium.com\/@chonghankhai\/bayesian-thinking-in-everyday-life-bf82fe2ab0af\u0022\u003EBayesian inference\u003C\/a\u003E. We illustrated the mosquito behavior we\u2019d observed in a \u003Ca href=\u0022https:\/\/acoh64.github.io\/mosquito_app\/\u0022\u003Eweb application\u003C\/a\u003E.\u003C\/p\u003E\u003Cfigure class=\u0022align-center zoomable\u0022\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=1000\u0026amp;fit=clip\u0022\u003E\u003Cimg alt=\u00224 panels showing trajectory of a mosquito in the presence of no target, visual target, CO2 target or both.\u0022 src=\u0022https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;fit=clip\u0022 srcset=\u0022https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=169\u0026amp;fit=crop\u0026amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=169\u0026amp;fit=crop\u0026amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=600\u0026amp;h=169\u0026amp;fit=crop\u0026amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=45\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=212\u0026amp;fit=crop\u0026amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=30\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=212\u0026amp;fit=crop\u0026amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/724564\/original\/file-20260318-57-2aq2gy.jpg?ixlib=rb-4.1.0\u0026amp;q=15\u0026amp;auto=format\u0026amp;w=754\u0026amp;h=212\u0026amp;fit=crop\u0026amp;dpr=3 2262w\u0022 sizes=\u0022(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\u0022\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cfigcaption\u003E\u003Cspan class=\u0022caption\u0022\u003EA mosquito\u2019s flight changes with the kind of target presented.\u003C\/span\u003E \u003Cspan class=\u0022attribution source\u0022\u003EDavid L. Hu\u003C\/span\u003E\u003C\/figcaption\u003E\u003C\/figure\u003E\u003Cp\u003EUsing our model, we showed how different targets cause mosquitoes to fly differently. Visual targets cause fly-bys, where mosquitoes fly past the target. Carbon dioxide causes double takes, where mosquitoes slow down near the target. The combination of a visual cue and carbon dioxide creates high-speed orbiting patterns.\u003C\/p\u003E\u003Cp\u003EUp until now, we had used only experiments with Styrofoam spheres to train our model. The true test was whether it could predict mosquito flights around a human. Chris returned to the chamber, this time wearing all white clothes and a black hat, turning himself into a bull\u2019s-eye. Our model successfully predicted the distribution of mosquitoes around him. We identified zones of danger, where there was a high chance of a mosquito circling around him.\u003C\/p\u003E\u003Cp\u003EPredicting mosquito behavior is a first step toward outsmarting them. In mosquito-prone areas, people design \u003Ca href=\u0022https:\/\/doi.org\/10.3389\/fpubh.2024.1404493\u0022\u003Ehouses with features to prevent mosquitoes\u003C\/a\u003E from following human cues and entering. Similarly, mosquito traps suck in mosquitoes when they get too close but still allow between \u003Ca href=\u0022https:\/\/doi.org\/10.1093\/jme\/tjz243\u0022\u003E50% and 90% of mosquitoes to escape\u003C\/a\u003E. Many of these designs are based on trial and error. We hope that \u003Ca href=\u0022https:\/\/doi.org\/10.1126\/sciadv.adz7063\u0022\u003Eour study provides a more precise tool\u003C\/a\u003E for designing methods for mosquito capture or deterrence.\u003C\/p\u003E\u003Cp\u003EWhen Chris\u2019 mother attended his master\u2019s degree defense, I asked her how she felt about her son using himself as bait for mosquitoes. She said she was very proud. So am I \u2013 and not just because I\u2019m relieved Chris didn\u2019t ask me to take his place in the mosquito chamber.\u003C!-- Below is The Conversation\u0027s page counter tag. Please DO NOT REMOVE. --\u003E\u003Cimg style=\u0022border-color:!important;border-style:none;box-shadow:none !important;margin:0 !important;max-height:1px !important;max-width:1px !important;min-height:1px !important;min-width:1px !important;opacity:0 !important;outline:none !important;padding:0 !important;\u0022 src=\u0022https:\/\/counter.theconversation.com\/content\/278486\/count.gif?distributor=republish-lightbox-basic\u0022 alt=\u0022The Conversation\u0022 width=\u00221\u0022 height=\u00221\u0022 referrerpolicy=\u0022no-referrer-when-downgrade\u0022\u003E\u003C!-- End of code. If you don\u0027t see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EThis article is republished from \u003C\/em\u003E\u003Ca href=\u0022https:\/\/theconversation.com\u0022\u003E\u003Cem\u003EThe Conversation\u003C\/em\u003E\u003C\/a\u003E\u003Cem\u003E under a Creative Commons license. Read the \u003C\/em\u003E\u003Ca href=\u0022https:\/\/theconversation.com\/hundreds-of-hungry-mosquitoes-a-student-volunteer-and-a-mesh-suit-helped-us-figure-out-how-these-deadly-insects-reach-their-targets-278486\u0022\u003E\u003Cem\u003Eoriginal article\u003C\/em\u003E\u003C\/a\u003E\u003Cem\u003E.\u003C\/em\u003E\u003C\/p\u003E\u003C\/div\u003E","summary":"","format":"full_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EBy tracking the flight of many mosquitoes around a student volunteer, we hoped to determine how they made decisions in response to his presence. Understanding how mosquitoes respond to humans is a first step to controlling them.\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"By tracking the flight of many mosquitoes around a student volunteer, we hoped to determine how they made decisions in response to his presence. Understanding how mosquitoes respond to humans is a first step to controlling them."}],"uid":"27469","created_gmt":"2026-03-18 16:52:12","changed_gmt":"2026-03-19 16:57:10","author":"Kristen Bailey","boilerplate_text":"","field_publication":"","field_article_url":"","location":"Atlanta, GA","dateline":{"date":"2026-03-18T00:00:00-04:00","iso_date":"2026-03-18T00:00:00-04:00","tz":"America\/New_York"},"extras":[],"hg_media":{"679694":{"id":"679694","type":"image","title":"Trajectories of mosquitoes flying around a human target. David L. Hu, Georgia Tech","body":"\u003Cp\u003ETrajectories of mosquitoes flying around a human target. David L. Hu, Georgia Tech\u003C\/p\u003E","created":"1773939193","gmt_created":"2026-03-19 16:53:13","changed":"1773939193","gmt_changed":"2026-03-19 16:53:13","alt":"Trajectories of mosquitoes flying around a human target. David L. Hu, Georgia Tech","file":{"fid":"263886","name":"file-20260317-57-gbcbz7.png","image_path":"\/sites\/default\/files\/2026\/03\/19\/file-20260317-57-gbcbz7.png","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/03\/19\/file-20260317-57-gbcbz7.png","mime":"image\/png","size":2835625,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/03\/19\/file-20260317-57-gbcbz7.png?itok=JyAHkg79"}}},"media_ids":["679694"],"related_links":[{"url":"https:\/\/theconversation.com\/hundreds-of-hungry-mosquitoes-a-student-volunteer-and-a-mesh-suit-helped-us-figure-out-how-these-deadly-insects-reach-their-targets-278486","title":"Read This Article on The Conversation"}],"groups":[{"id":"1237","name":"College of Engineering"},{"id":"1278","name":"College of Sciences"},{"id":"658168","name":"Experts"},{"id":"142761","name":"IRIM"},{"id":"1214","name":"News Room"},{"id":"1292","name":"Parker H. Petit Institute for Bioengineering and Bioscience (IBB)"},{"id":"1188","name":"Research Horizons"},{"id":"1275","name":"School of Biological Sciences"},{"id":"108731","name":"School of Mechanical Engineering"}],"categories":[],"keywords":[{"id":"187915","name":"go-researchnews"}],"core_research_areas":[],"news_room_topics":[{"id":"71911","name":"Earth and Environment"}],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Ch5\u003EAuthor:\u003C\/h5\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/theconversation.com\/profiles\/david-hu-204122\u0022\u003EDavid Hu\u003C\/a\u003E, Professor of Mechanical Engineering and Biology, Adjunct Professor of Physics, \u003Ca href=\u0022https:\/\/theconversation.com\/institutions\/georgia-institute-of-technology-1310\u0022\u003E\u003Cem\u003EGeorgia Institute of Technology\u003C\/em\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Ch5\u003EMedia Contact:\u003C\/h5\u003E\u003Cp\u003EShelley Wunder-Smith\u003Cbr\u003E\u003Ca href=\u0022mailto:shelley.wunder-smith@research.gatech.edu\u0022\u003E\u003Cstrong\u003Eshelley.wunder-smith@research.gatech.edu\u003C\/strong\u003E\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}