A patient infected with chikungunya looks out from mosquito netting at a hospital in San Lorenzo, Paraguay. The country has counted over 100,000 cases of the mosquito-borne virus this year. Jorge Saenz/AP hide caption
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This undated photo made available by the Centers for Disease Control and Prevention shows a strain of Candida auris cultured in a petri dish. Shawn Lockhart/AP hide caption
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In the video game and HBO show The Last of Us, an infectious fungi turns humans into zombies. David McNew/Getty Images hide caption
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Staff volunteers queue to receive a fourth dose of the Pfizer COVID-19 vaccine at Sheba Medical Center in Israel on Dec. 27, 2021, as the hospital conducted a trial of a fourth jab of the vaccine. Jack Guez/AFP via Getty Images hide caption
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There's increasing emphasis on wearing masks while flying. How much protection do they offer against COVID-19? James D. Morgan/Getty Images hide caption
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Outdoor dining in Bonn, Germany. Indoor dining is riskier than outdoor meals, experts say. Outdoor air can disrupt viral particles that have been expelled. Andreas Rentz/Getty Images hide caption
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Minks at a mink farm. Yuri Tutov/AFP via Getty Images hide caption
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Childhood infections may increase the risk of developing certain mental illnesses in childhood and adolescence. Kathleen Finlay/Getty Images/Image Source hide caption
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Sheila Dhand, a wound care nurse, treats many people who use drugs via mobile unit. Elana Gordon / WHYY hide caption
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Kristopher Kelly near his home in Concrete, Wash., in February. He broke his pelvis and all his ribs in a work accident last year. The resulting infection he developed in the hospital almost killed him. Ian C. Bates for NPR hide caption
Did An IV Cocktail Of Vitamins And Drugs Save This Lumberjack From Sepsis?
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A 4-year-old regulation in New York state requires doctors and hospitals to treat sepsis using a protocol that some researchers now question. Getty Images/iStockphoto hide caption