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PHO Rounds: Epidemiology - Passive tick surveillance in Ontario: the burgeoning distribution of blacklegged ticks
Thursday, May 15, 2014 12:00 pm to 01:00 pm
Venue: 480 University Ave, Suite 300 Toronto, ON M5G 1V2 Boardroom 350
City: Toronto
Format: In Person; Webinar

​Note: This is an open invitation, and may be forwarded to interested parties.

Changes in climate, host ecology, and land use patterns continually interact to alter the distribution of tick species in North America. The distribution of a tick species has important public health implications, such as identifying areas where the public are at greater risk of tick-borne diseases. The emergence of Lyme disease in Ontario over the last decade highlights the importance of understanding the distribution of the vector tick Ixodes scapularis (blacklegged tick). This session will 1) increase your knowledge of tick species found on humans in Ontario and their vector potential, 2) increase your understanding of the geographic and seasonal distribution patterns of Ontario ticks, 3) provide the demographics of persons submitting these ticks, 4) provide an overview of the patterns of geographic distribution and incidence of blacklegged ticks infected with Borrelia burgdorferi and Anaplasma phagocytophilum and 5) discuss implications for public health.

Presenter: Dr. Mark P. Nelder

Dr. Mark P. Nelder is currently an Issues Analyst for the Emergency Preparedness and Incident Response team at Public Health Ontario. Mark has also worked with PHO’s Enteric, Zoonotic and Vector-Borne Diseases unit on West Nile virus, eastern equine encephalitis virus, mosquito/tick ecology and zoonotic pathogens. Mark received his doctoral degree in medical and veterinary entomology from Clemson University (South Carolina) in 2007, studying the ecology of ectoparasites, biting flies and pathogens of zoos. After obtaining his PhD, Mark held a post-doctoral position at Rutgers University (New Jersey) studying the ecology and management of the invasive Asian tiger mosquito. Mark’s research interests lie with WNV economics, mosquito ecology, imported malaria and tick surveillance.

Public Health Ontario Grand Rounds are approved for continuing medical education from the Royal College of Physicians and Surgeons. For more information, contact


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If you require accommodations to participate in this event, please contact 647-260-7100 or


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