When DDT was introduced more than 60 years ago, it initially scored victory after victory in the fight against malaria — nearly eliminating the deadly disease in many areas. But these wins were mostly short-lived, as mosquitoes rapidly developed resistance to the chemical. Today, its effectiveness is a fraction of what it once was; meanwhile an arsenal of better and safer anti-malaria interventions has been developed, including effective chemical-free strategies.
And so, under the auspices of the Stockholm Convention, the nations of the world have committed to phasing out DDT, while allowing it to be used in the short-term in those few places where it's still effective and other methods of malaria control are unavailable. This is an approach PAN enthusiastically supports.