The US city of Dallas has dropped insecticide from the air for a second time to combat a deadly outbreak of West Nile virus.

Several aircraft have been deployed after the city was declared the centre of the worst outbreak in the US this year.

First identified in Africa in the 1930s, West Nile is spread to humans by mosquitos. The virus was discovered in the US more than a decade ago.
...
http://www.euronews.net/