Understanding West Nile and Lyme disease

Diseases transmitted by arthropods, like mosquitos and ticks, are called vector-borne diseases. In this 2-minute video, infectious disease specialist Dr. Mark Loeb discusses the symptoms and the complications of these diseases and how to protect yourself.



Download a transcript of this video.

You can learn more about the prevalence of Lyme disease across Canada with this interactive map developed by Health Canada. 

The 2017 photograph above depicts the pathognomonic erythematous rash in the pattern of a “bull’s-eye”, which manifested at the site of a tick bite on this Maryland woman’s posterior right upper arm, who’d subsequently contracted Lyme disease.[1]

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Author Details


1. Author: James Gathany. This media comes from the Centers for Disease Control and Prevention’s Public Health Image Library (PHIL), with identification number #9874.

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