American troops overseas have suffered extensively from malaria in the past . Gates Foundation study tested with ` ` has failed to overcome '' U.S. malaria study reports success with intravenous vaccine . NIH official hails test as an ` ` important step forward '' Malaria affects an estimated 200-million plus every year , killing about 100 million .
Gates Foundation study tested with ` ` has failed to overcome '' U.S. malaria study reports success with intravenous vaccine . NIH official hails test as an ` ` important step forward '' Malaria affects an estimated 200-million plus every year , killing about 100 million .