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Mosquito Numbers Decline in Certain African Areas

Stockbyte/Thinkstock(TANZANIA) -- Malaria-affected mosquito populations are declining in certain areas across Africa, according to recent figures, though researchers are unsure as to why.

The Malaria Journal reports that researchers are unsure if the decline means the pesky insects have been eradicated for good, or if they will come back in a stronger force.

The BBC reports that malaria cases dropping in Tanzania, Eritrea, Rwanda, Kenya and Zambia, according to data.

Anti-mosquito bed nets are lessening the spread of the disease in some sub-Saharan countries.

Researchers also cite that mosquito traps installed over the course of 10 years have caught insects by the thousands in Tanzania, and the numbers have drastically been reduced over the years.

Scientists captured over 5,000 mosquitoes in 2004, and could only trap 14 in 2009.

Copyright 2011 ABC News Radio

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