Rickettsia, da Rocha-Lima, 1916

Search for Rickettsia View in CoL in Wild boar blood

Blood samples from the four wild boars of G1 were negative according to qPCR throughout the evaluating period. None of the guinea pigs inoculated with wild boar blood showed hyperthermia or clinical signs compatible with R. rickettsii infection. However, at 21 days after inoculation (DAI), seroconversion with low endpoint titers (64–256) was observed in several guinea pigs after being inoculated with blood from the G1 wild boars ( Table 2). Tis included two guinea pigs inoculated with blood collected from wild boar nos. 3 and 4 on 9 DPI, one guinea pig inoculated with blood from wild boar no. 3 on 12 DPI and seven guinea pigs inoculated with blood from wild boar 1–4 on 15 DPI.

Before inoculation with wild boar blood (0 DAI), all guinea pigs were seronegative (titer <64) to R. rickettsii. Te only exception was guinea pig no. 32 (inoculated with blood from wild boar no. 4 collected on 15 DPI), which presented an endpoint titer of 1024 at 0 DAI and then an endpoint titer of 128 at 21 DAI. Te two guinea pigs inoculated with blood from wild boar no. 5 (G2) on 9 DPI remained seronegative at 21 DAI.