摘要：Hyalomma marginatum marginatum of Europe and Asia and H. marginatum rufipes of Africa, both reservoirs and vectors of organisms pathogenic to humans and animals, have not infrequently been found as incidental specimens or established populations far from their normal endemic geographical boundaries. Owing to ticks' unique ability to transmit or harbour for long periods a variety of pathogens of man and animals, their potential epidemiological role is suspected wherever they occur. Evidence that birds, in themselves hosts of several viruses causing human disease, actually transport the African H. marginatum rufipes northwards was obtained in Egypt by capture of infested migrants during spring passage from East Africa to Europe and Asia. Between 1956 and 1960, 340 birds representing 22 forms (species and subspecies) were found infested by 1025 immature ticks, all but seven of which were or appear to be H. marginatum rufipes. The period of attachment of immature stages of rufipes to their host is sufficient to suggest that many of these ticks are carried some distance into Europe and Asia. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (3.5M), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
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