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Tue October 18, 2011
Malaria vaccine pushed by PATH and Gates shows some success
Leaders at the Seattle non-profit group PATH – and their sponsors at the Bill & Melinda Gates Foundation– say they’re excited about the latest results from a malaria vaccine trial in Africa. The interim results don't guarantee it will be a success, but it’s the best any malaria vaccine has ever done.
The RTS,S malaria vaccine protects about half the children who get it (47 percent from severe malaria, and 56 percent from clinical malaria). While that’s not nearly as good as vaccines against other diseases, such as measles or even the flu, it's just over the threshold to be useful in Africa.
“The results being made available today do represent a huge milestone,” said Bill Gates, announcing the results himself at a malaria conference in Seattle. "I want to congratulate the large number of partners who've been working on this project for decades."
The results were published in the New England Journal of Medicine.
The Gates Foundation is a major funder of the vaccine research. PATH coordinated the study, as the leader of the Malaria Vaccine Initiative.
Work on this particular malaria vaccine started 27 years ago in Europe. The Gates Foundation and PATH adopted it a decade ago and started intense work to make it a reality. They hope to finish the clinical trials in Tanzania in about three years. Still, it’s not certain it will meet the minimum standards to be both effective and safe.
The vaccine is designed to protect young children from malaria – as they account for most of the nearly 800,000 annual deaths from the disease.
Malaria is caused by a parasite that lives in mosquitoes and humans. It was eliminated from the U.S. decades ago. It can be cured with modern drugs, but those have proven expensive and impractical to use in countries where malaria is rampant.