Comprehensive global malaria map may help eliminate the disease

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Washington, Mar 24 (ANI): An international team of researchers has created a global map that shows the proportion of malaria infected population at locations throughout the globe - a development which can act as a key tool to help in the control and elimination of the disease.

For developing the map, the researchers used data from nearly 8000 local surveys of rates of infection by Plasmodium falciparum.

The map shows that areas where a high proportion of residents are infected are common in Africa, but the ratio is not uniform throughout the country.

However, lower prevalence levels are found in the Americas and Central and Southeast Asia, although pockets of intermediate and high transmission remain in some parts of Asia.

Malaria is one of the most common infectious diseases in the world.

Researchers, led by Simon Hay from the Department of Zoology at the University of Oxford, have shown that global malaria endemicity is substantially lower than would be predicted from inspection of historical maps.

Still, the map indicates that, in 2007, almost 60 percent of the 2.4 billion people at any risk of malaria were living in areas where malaria is constantly present - 0.69 billion people in Central and South East Asia, 0.66 billion in Africa, Yemen, and Saudi Arabia, and 0.04 billion in the Americas.

The new map is a part of the Malaria Atlas Project and reflects the use of model-based geostatistics to incorporate data obtained across space and time.

It also provides an important new resource by indicating areas where malaria control can be improved, as well as areas where malaria elimination may be possible.

And because of the statistical methods used to construct the new map, it is possible to quantify the uncertainty in the results.

"The state of the P. falciparum malaria world in 2007 represents an enormous opportunity for the international community to act. This cartographic resource will help countries determine their needs and serve as a baseline to monitor and evaluate progress towards interventional goals," said the authors.

The study is published in the latest edition of PLoS Medicine. (ANI)

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