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Articles on Emerging viruses

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West Nile virus is spread by mosquitoes. About 80 per cent of infected people have no symptoms, but the virus can cause encephalitis and can be life-threatening. (AP Photo/Rick Bowmer)

What Canadians need to know about West Nile virus, a mosquito-borne infection that can be life-threatening

West Nile virus arrived in North America in 1999 and spread across the continent by 2005. Here’s what you need to know about this mosquito-borne pathogen.
Not malaria - guess again. James Gathany/CDC

Why are emerging viruses here – and why now?

The US is on the brink of a new virus epidemic; a virus that wasn’t there ten years ago but which is now worrying officials. Chikungunya, which causes an incapacitating fever, is spread via Aedes mosquitoes…

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