The World Health Organisation has unbanned DDT and now considers that pesticide a major tool in the fight against malaria, the dreaded disease that hits half a billion people and kills 1-2.7 million each year ( mostly sub-Saharan children). Many have expressed their happiness about this and expect that malaria will soon be dealt a final blow, but that may be a bit too early because this WHO decision may be one barrier less for the use of this ‘weapon of mass survival’: the resistance against the use of it is still considerable. [Lees verder]