Volume 24, Number 11—November 2018
Research
Rickettsia rickettsii Co-feeding Transmission among Amblyomma aureolatum Ticks
Figure
![Experimental procedures to evaluate co-feeding transmission of Rickettsia rickettsii among Amblyomma aureolatum ticks on 6 guinea pigs (as numbered) subjected to up to 4 consecutive infestations at 0, 30, 120, and 430 days postinfestation, Brazil. Each guinea pig in each acquisition infestation had 2 cotton sleeves (feeding chambers) glued to its shaved back; the 2 chambers each received 200–300 UL, whereas only 1 chamber received 50 R. rickettsii IN. White oval indicates feeding chamber. IN, in](/eid/images/18-0451-F1.jpg)
Figure. Experimental procedures to evaluate co-feeding transmission of Rickettsia rickettsii among Amblyomma aureolatum ticks on 6 guinea pigs (as numbered) subjected to up to 4 consecutive infestations at 0, 30, 120, and 430 days postinfestation, Brazil. Each guinea pig in each acquisition infestation had 2 cotton sleeves (feeding chambers) glued to its shaved back; the 2 chambers each received 200–300 UL, whereas only 1 chamber received 50 R. rickettsii IN. White oval indicates feeding chamber. IN, infected nymph; UL, uninfected larvae.
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