Ein neuer Anfang für DDT

PALO ALTO: Microsoft-Mitbegründer Bill Gates ist faszinierend, und dasselbe gilt für den 19-seitigen Jahresbrief, der die Arbeit der Bill and Melinda Gates Foundation, des weltweit größten philanthropischen Unterfangens, beschreibt. Doch für jemanden, der so intelligent ist wie Gates und es sich leisten kann, Experten zu jedem Thema unter der Sonne zu beschäftigen, sind einige der Strategien seiner Stiftung rätselhaft.

Man betrachte etwa den Ansatz der Stiftung in Bezug auf die Malaria, der sich auf Moskitonetze, eine nur mäßig erfolgreiche Low-tech-Lösung, und auf die Entwicklung eines Impfstoffs, eine High-tech-Lösung, die trotz jahrzehntelanger intensiver Bemühungen noch immer nicht gefunden wurde, konzentriert. Dieser Ansatz verwirft einen alten, billigen und sicheren Weg zur Kontrolle des Vektors, über den diese Krankheit verbreitet wird (die Anophelesmücke): DDT.

Malaria ist eine Geißel, insbesondere für die Bewohner armer tropischer Länder. Einundvierzig Prozent der Weltbevölkerung leben in Gegenden, wo die Malaria übertragen wird, und es gibt 350-500 Millionen Fälle pro Jahr.

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