Publications

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population-based passive tick surveillance and detection of expanding foci of blacklegged ticks ixodes scapularis and the lyme disease agent borrelia burgdorferi in ontario, canada.we identified ticks submitted by the public from 2008 through 2012 in ontario, canada, and tested blacklegged ticks ixodes scapularis for borrelia burgdorferi and anaplasma phagocytophilum. among the 18 species of ticks identified, i. scapularis, dermacentor variabilis, ixodes cookei and amblyomma americanum represented 98.1% of the 14,369 ticks submitted. rates of blacklegged tick submission per 100,000 population were highest in ontario's eastern region; d. variabilis in central west and easte ...201425171252
prevalence of anaplasma phagocytophilum and babesia microti in ixodes scapularis from a newly established lyme disease endemic area, the thousand islands region of ontario, canada.blacklegged ticks (ixodes scapularis) are vectors for several important human diseases, including lyme disease, human granulocytic anaplasmosis (hga), and human babesiosis, caused by borrelia burgdorferi, anaplasma phagocytophilum, and babesia microti, respectively. the continued northward range expansion of blacklegged ticks and associated pathogens is an increasing public health concern in canada. the thousand islands region of eastern ontario has recently been identified as a new endemic area ...201526393476
distribution of ticks and the risk of lyme disease and other tick-borne pathogens of public health significance in ontario, canada.over the past two decades, the northward spread of ixodes scapularis across ontario, canada, has accelerated and the risk of lyme disease has increased. active surveillance is a recognized and effective method for detecting reproducing populations of i. scapularis. in this study, we conducted field sampling consistent with an active surveillance approach from may to october 2014 at 104 sites in central, eastern, and southern ontario to determine the current distribution of i. scapularis and othe ...201626870937
role of migratory birds in introduction and range expansion of ixodes scapularis ticks and of borrelia burgdorferi and anaplasma phagocytophilum in canada.during the spring in 2005 and 2006, 39,095 northward-migrating land birds were captured at 12 bird observatories in eastern canada to investigate the role of migratory birds in northward range expansion of lyme borreliosis, human granulocytic anaplasmosis, and their tick vector, ixodes scapularis. the prevalence of birds carrying i. scapularis ticks (mostly nymphs) was 0.35% (95% confidence interval [ci] = 0.30 to 0.42), but a nested study by experienced observers suggested a more realistic infe ...200818245258
the low seroprevalence of tick-transmitted agents of disease in dogs from southern ontario and quebec.infectious diseases caused by pathogens transmitted by ticks and other insect vectors are an important cause of morbidity and mortality in both dogs and humans throughout north america. the purpose of this study was to determine the seroprevalence of selected vector-transmitted pathogens in southern ontario and quebec. samples submitted to the vector borne disease diagnostic laboratory (vbddl) at the north carolina state university college of veterinary medicine were evaluated for antibodies to ...200617217089
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