Réinitialiser le DDT

PALO ALTO – Le co-fondateur de Microsoft, Bill Gates, est fascinant. De même que la lettre annuelle de 19 pages qui décrit le travail de la fondation de Bill et Melinda Gates, la plus grande ouvre philanthropique au monde. Mais pour quelqu’un d’aussi intelligent que Gates, qui peut s’offrir des experts dans n’importe quel domaine que l’on puisse imaginer, certaines des stratégies de sa fondation sont déroutantes.

Prenons l’approche de sa fondation sur le paludisme : elle se concentre sur la solution des moustiquaires, intervention faiblement technologique et modestement efficace et sur le développement d’un vaccin, solution hautement technologique, mais largement inexploitée depuis des décennies. Cette approche élude un moyen plus ancien, bon marché et sûr de contrôler le vecteur de cette maladie, le moustique Anophèle : le pesticide DDT.

La malaria est une plaie, particulièrement pour les habitants pauvres des pays tropicaux. Quarante et un pour cent de la population mondiale vit dans les zones à risques, avec 350 à 500 millions de cas d’infections chaque année.

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