| Autor: |
Matsumoto, Koutaro, Brouqui, Philippe, Raoult, Didier, Parola, Philippe |
| Zdroj: |
Vector Borne and Zoonotic Diseases; Winter 2005, Vol. 5 Issue: 4 p363-372, 10p |
| Abstrakt: |
Rhipicephalus sanguineusgroup ticks collected on dogs in Thailand were maintained in the laboratory over several generations to test methods to infect these ticks with Rickettsia conorii, the agent of Mediterranean spotted fever. Three methods were tested: (1) infection of adults and nymphs through artificially induced bacteremic rabbit, (2) capillary feeding of solution containing 5 ×× 103and 5 ×× 105pfu/mL of R. conoriito adult female ticks, and (3) immersion of engorged nymphs which were "one leg-cut," "two leg-cut," or "cuticle cut" in solution containing R. conorii. The most efficient method to infect adult ticks with R. conorii was infection of ticks through the bacteremic rabbit (71.4%). The best method to infect nymphs with R. conoriiwas immersion of "one leg-cut" engorged nymphs in solution containing R. conorii(30%). Interestingly, a high mortality of the ticks infected with R. conoriiwas observed regardless of the method used. The harmful effect of R. conoriion Rh. sanguineusgroup ticks from Thailand is discussed including the role of the geographic origin of the ticks and the difficulties to identify ticks within this group to the species level.Vector-Borne Zoonotic Dis, 5, 363––372. |
| Databáze: |
Supplemental Index |
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