WIKIMEDIA COMMONS, CDC
Parts of Africa are seeing an unexplained and dramatic drop in mosquito populations, according to a paper published last month in Malaria Journal. Coincidently, malaria also seems to be on the decline, with reports from Tanzania, Eritrea, Rwanda, Kenya and Zambia all pointing to significant decreases in disease incidence, reports BBC News. At least part of this is likely due to control measures, such as bed nets treated with insecticides, but the new data suggest that other factors may be at play.
For the last decade, Danish and Tanzanian scientists have been monitoring mosquito populations in Tanzania. In 2009, they caught just 14 Anopheles mosquitoes in 2,368 traps, down from more than 5,000 in 2004. And these particular data came from villages that weren’t using ...
