Hmmm - my research is suggesting that, while malaria mosquitoes have now gained significant immunity to the pyrethoids which were used to replace DDT when the US ceased production in 1972 (which, I understand, they were already doing to DDT), and that the netting etc that was attempted as a replacement were not found to be sufficient, that the countries most thratened by malaria, and where it has made a come-back, have successfully negotiated exemptions in the POP treaty that is due to come into effect next year:
Dear Colleagues,
At the end of this long and successful campaign, the Malaria Foundation International (MFI) and the Malaria Project (MP) would like to both thank and congratulate you and the many parties for valuable assistance that helped to succesfully obtain an exemption for DDT at the INC 5 POP's negotiations recently in South Africa.
In particular, we thank the over 400 doctors and scientists from 63 countries, who lent strong support last year when this issue was first brought to the attention of the scientific community. It was due only to this strong support of yourselves, voiced together with others in the public health community, that DDT was not slated for elimination along with the 11 other chemicals on the treaty.
This outcome will save many lives, and it also demonstrates the power of coherent advocacy in achieving public health goals, which is a critical function served by the Malaria Foundation International........
http://www.malaria.org/DDTpage.html
I gather that spraying indoors in people's homes has often continued - with DDT manufactured in India and China.
The BBC has an interesting article here:
http://news.bbc.co.uk/2/hi/science/nature/3532273.stm
which is worth reading since, if one if able to ignore Gunga's usual rather hysterical tone and distorted and distorting polemics, it is an interesting topic - one that illustrates the difficulties of finding a balance between environmental concerns, and the real needs of people in poor countries.
Here
http://www.post-gazette.com/healthscience/20020721malaria3.asp is another intersting article.
And, this, on a cursory glance, appeared a reasonable discussion of resurgent malaria in South America :
http://www.cdc.gov/ncidod/EID/vol3no3/roberts.htm
Wouldn't it be good if, despite Gunga's tone - this turned into a reasonable discussion?