Some Brazilian researchers say Truvada should only be given to very specific groups at risk of getting HIV, like young, gay men. Others are concerned that a drug that blocks the transmission of HIV could be a set-back for safe sex campaigns and might actually encourage unsafe sexual behavior.
Following the FDA approval of Truvada — the once-a-day pill that can drastically lower a person's risk of contracting HIV — Audie Cornish talks with Dr. Wafaa El-Sadr of Columbia University's Mailman School of Public Health. They examine the status of HIV prevention efforts in the U.S. today — what progress has been made and the challenges that still ahead. El-Sadr has worked on HIV/AIDS prevention and treatment since 1981.
Almost 90 percent of the target population – half in Port-au-Prince and the other half in a remote rural area – got fully protected against cholera. The results defy the forecasts of skeptics who said in advance of the campaign that it would be lucky to protect 60 percent of the target populations.
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