By Fred de Sam Lazaro in PBS NewsHour

After Haiti suffered a 7.0 magnitude earthquake, experts believe aid workers accidentally brought cholera to that nation, spreading due to unsanitary conditions. The epidemic has made 600,000 Haitians ill and 7,500 dead. Fred de Sam Lazaro interviews Dr. David Walton with Partners In Health/Zanmi Lasante on the challenges to treat a disease not seen in Haiti for more than 100 years.

http://www.pbs.org/newshour/bb/globalhealth/july-dec12/haiti_12-04.html