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

itoggle caption Fox Photos/Getty Images

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

Nurse Tina Martin checks on Orion Qurbonaliev, 4, who has tuberculosis. Orion's grandmother, Kholbibi Abdulloeva, also has TB. Jason Beaubien/NPR hide caption

itoggle caption Jason Beaubien/NPR

Oxana and Pavel Rucsineanu walk to the tuberculosis hospital in Balti, Moldova. Oxana and their new baby live in an apartment, but Pavel still has to stay at the TB ward, fighting for his life. Jason Beaubien/NPR hide caption

itoggle caption Jason Beaubien/NPR

Michelle Williams (center) and two daughters visit the grave of her mother, Judy Williams, at Fairview Cemetery in Hyde Park, Mass., on May 11. Judy died in 2011. Ellen Webber for NPR hide caption

itoggle caption Ellen Webber for NPR

Abdullah Mchumvu has been training African giant pouched rats for more than a decade in Morogoro, Tanzania. Jonathan Kalan for NPR hide caption

itoggle caption Jonathan Kalan for NPR

About a third of the world's population is thought to be infected with Mycobacterium tuberculosis, but only a small fraction of people get the disease. NIAID_Flickr hide caption

itoggle caption NIAID_Flickr

Although tuberculosis is declining around the world, drug-resistant strains of Mycobacterium tuberculosis are on the rise. NIAID/Flickr.com hide caption

itoggle caption NIAID/Flickr.com