As a dead crow tested positive for West Nile virus in Ontario this week, Canadians may be wondering: just how prevalent are such mosquito-borne viruses in Canada, and how risky is the summer camping trip?
Mosquitoes are the most dangerous animals on Earth, carrying many diseases. Malaria alone takes hundreds of millions of lives each year. Cases of dengue, yellow fever and chikungunya are projected to rise globally due to climate and land-use change.
