| ticks and tick-borne rickettsiae surveillance in montesinho natural park, portugal. | this study constitutes the first contribution to the knowledge of tick dynamics and its implication in the epidemiology of rickettsial diseases in montesinho natural park (mnp), bragança district of portugal. of 76 ticks collected, 12 (15.8%) were dermacentor (d.) marginatus, 36 (47.4%) d. reticulatus, and 28 (36.8%) rhipicephalus (r.) sanguineus. isolation assays were performed by shell-vial technique on 41 ticks. israeli spotted fever strain was an isolate from r. sanguineus, and three isolate ... | 2006 | 17114695 |