Polina, 37, rests in a hospital bed in St. Petersburg, Russia, in 2011. She is severely malnourished and suffers from numerous diseases, including tuberculosis, hepatitis C and HIV. Misha Friedman hide caption

itoggle caption Misha Friedman

An X-ray of the chest of a man with tuberculosis. The areas infected with TB bacteria are colored red. Science Photo Library/Corbis hide caption

itoggle caption Science Photo Library/Corbis

Domitilia, 57, is a diabetic patient in the Dominican Republic who contracted tuberculosis. She's now cured of TB after two years of treatment. Javier Galeano/The Union hide caption

itoggle caption Javier Galeano/The Union

Two young girls, part of the wave of unaccompanied children who've illegally entered the U.S., watch a soccer match at the Customs and Border Protection Nogales Placement Center in Arizona. Ross D. Franklin/AP hide caption

itoggle caption Ross D. Franklin/AP

An Indian woman takes tuberculosis pills at a clinic in Mumbai. More than 700 Indians die from TB each day. That's one death every two minutes. Pal Pillai/AFP/Getty Images hide caption

itoggle caption Pal Pillai/AFP/Getty Images

A pregnant Somali woman gets a tetanus shot at a clinic in Mogadishu in 2013. The vaccination initiative was launched by the GAVI Alliance, UNICEF and the World Health Organization. Carl de Souza/AFP/Getty Images hide caption

itoggle caption Carl de Souza/AFP/Getty Images

Oxana and Pavel Rucsineanu fell in love while living at a tuberculosis ward in Balti, Moldova. Jason Beaubien/NPR hide caption

itoggle caption Jason Beaubien/NPR

Signs of tuberculosis have been found in ancient Egyptian mummies, such as this one in London's British Museum. Klafubra/Wikimedia.org hide caption

itoggle caption Klafubra/Wikimedia.org

Children with tuberculosis sleep outside at Springfield House Open Air School in London in 1932. Like sanatoriums, these schools offered TB sufferers a place to receive the top treatment of the day: fresh air and sunshine. Fox Photos/Getty Images hide caption

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A Doctors Without Borders support counselor waits for MDR-TB patients at a clinic in Nukus, Uzbekistan. Courtesy of Misha Friedman hide caption

itoggle caption Courtesy of Misha Friedman

Dale Hippensteel, manages the Sheboygan County health department. Jeffrey Phelps/For NPR hide caption

itoggle caption Jeffrey Phelps/For NPR

Nurse Marina Bogdanova, with Sputnik, gives medications to Sergei Gaptenko, who is close to finishing treatment for drug-resistant tuberculosis. Konstantin Salomatin for NPR hide caption

itoggle caption Konstantin Salomatin for NPR

Igor Davydenko sits in his cell at a Siberian prison where inmates are treated for drug-resistant tuberculosis. Konstantin Salomatin/for NPR hide caption

itoggle caption Konstantin Salomatin/for NPR

Rukshona Saidova, 12, lives with both HIV and tuberculosis. She can't walk right now because the diseases have atrophied muscles in her legs. Jason Beaubien/NPR hide caption

itoggle caption Jason Beaubien/NPR