The scientists also believe that unlike with insecticides, where as many as 80% of mosquitoes are no longer killed by the compounds, the insects are unlikely to develop resistance to the fungus as it targets many different genes in the parasite.

BBC: NEWS | Health | Fungi 'new tool' against malaria

Now mosquitoes have become resistant to many of these chemicals and fish are back on the menu.

BBC: NEWS | Science/Nature | Fish eat away at malaria in India

Many fertile lowland areas are swarming with deadly mosquitoes.

ECONOMIST: Ethiopia

Not all bite complaints are due to fleas, of course - many can be attributed to bedbugs, midges and mosquitoes.

BBC: Who, What, Why: Have flea numbers jumped?