Insecticide treated nets have helped to bring down the number of malaria cases (Image: UNICEF)

"Malaria is a climate sensitive disease and for this time of the year we have experienced uncommonly heavy rainfall and flooding in parts of southern Africa," said Joaquim Da Silva, WHO's Malaria Epidemics & Emergency Officer in the region.

La Niña is characterised by unusually cold ocean temperatures in the eastern equatorial Pacific Ocean, recorded every three to four years, which causes a ripple effect felt across the globe, making wet regions wetter and dry ones even drier.

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[3 Jan 2008 08:39]

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