The bite of a cobra can paralyze its victims and, if enough venom is released, fatally stop their breathing. It's estimated that more than 75 percent of patients in India who die from a snake's bite never make it to the hospital.
Ali Maow Maalin said he avoided getting the smallpox vaccine as a young man because he was afraid of needles. He didn't want others to make the same mistake with polio.
Courtesy of the World Health Organization
A mother and daughter walk home after attending a community meeting about eradicating female genital mutilation in the western Senegalese village of Diabougo.
Finbarr O'Reilly/Reuters /Landov
A Yemeni child receives a polio vaccine in the capital city of Sanaa. The Yemen government launched an immunization campaign last month in response to the polio outbreak in neighboring Somalia.
Mohammed Huwais/AFP/Getty Images
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.
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A woman waits to get AIDS drugs on April 8 at a clinic in Ga-Rankuwa, South Africa, about 55 miles north of Johannesburg. New WHO guidelines say patients should start HIV treatment much earlier, before they become extremely sick.
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