FILE - In this Friday, Oct. 30, 2009 file photo showing an unidetified mother as watches over her child who is suffering from severe malaria, as other children lay nearby, in the Siaya hospital in Western Kenya. Malaria is spread by mosquitoes and kills more than 650,000 people every year, mostly young children and pregnant women in Africa. GlaxoSmithKline and the PATH Malaria Vaccine Initiative, helped develop a new experimental malaria vaccine which was thought promising but is now turning out to be a disappointment, with a new study showing it is only about 30 percent effective at protecting infants from the killer disease according to results released in South Africa Friday Nov. 9, 2012. (AP Photo/Karel Prinsloo, file)

Associated Press
FILE - In this Friday, Oct. 30, 2009 file photo showing an unidetified mother as watches over her child who is suffering from severe malaria, as other children lay nearby, in the Siaya hospital in Western Kenya.  Malaria is spread by mosquitoes and kills more than 650,000 people every year, mostly young children and pregnant women in Africa.  GlaxoSmithKline and the PATH Malaria Vaccine Initiative, helped develop a new experimental malaria vaccine which was thought promising but is now turning out to be a disappointment, with a new study showing it is only about 30 percent effective at protecting infants from the killer disease according to results released in South Africa Friday Nov. 9, 2012.  (AP Photo/Karel Prinsloo, file)
FILE - In this Friday, Oct. 30, 2009 file photo showing an unidetified mother as watches over her child who is suffering from severe malaria, as other children lay nearby, in the Siaya hospital in Western Kenya. Malaria is spread by mosquitoes and kills more than 650,000 people every year, mostly young children and pregnant women in Africa. GlaxoSmithKline and the PATH Malaria Vaccine Initiative, helped develop a new experimental malaria vaccine which was thought promising but is now turning out to be a disappointment, with a new study showing it is only about 30 percent effective at protecting infants from the killer disease according to results released in South Africa Friday Nov. 9, 2012. (AP Photo/Karel Prinsloo, file)
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