Imported a rbovi rus infections in C anada 1974-89

H ARTSOB, L SPENCE. Imported arbovirus infections in Canada 1974-89. Can J Infect Dis 1991; 2(3):95- 100. From 1974 to 1989, sera from symptomatic patients with histories of recent travel outside Canada were tested for antibodies to several arboviruses, principally of the alphavirus and fl avivirus families. Diagnostic seroconversions wer e docu mented in 84 in­ dividuals from six provinces, including one alphavirus (Chikungunya) and 83 flavivirus seroconvertors. Dengue 1 virus was isolated from the blood of one patient. Most flavivirus seroconvertors were likely infected with dengue virus, but infections with tick-borne en­ cephalitis, St Louis encephalitis and Powassan viruses were also recognized. Patients had h istories of recent travel to the Caribbean, South America, Asia, Africa, North America (outside Canada). Tahiti, Fij i and Europe. Possible imported infections due to Japanese encephalitis, Ross River, westem equine encephali tis and Colorado tick fever viruses were also encountered. Ke y Words: A lphavirus. Arbovirus, Dengue, Flavivirus Arboviroses importees aux Canada de 1974 a 1989