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He added the best way to avoid the virus was to "avoid being bitten" by covering up and using insecticide.

Current efforts aim to kill mosquitoes with insecticide rather than curing them of malaria.

There are also some natural substances that are used as pesticides in organic agriculture, often isolated hormones or chemicals from plant tissues that are used as insecticides.

To deal with the increasing outbreaks, farmers are resorting to using herbicides and insecticides that can damage soil quality in the long term and also pose health risks.

The carcinogenic insecticide did not show up in a single unregulated product.