Table 1.
Seroreactivity to four Rickettsia species in humans, dogs, and terrestrial small mammals from Parque Nacional das Emas (PNE), state of Goiás, from February 2020 to September 2021.
| Humans, Dogs, and Terrestrial Small Mammal Species (Tested Specimens) |
Number of Animals Reactive to Each Rickettsia spp./% Seroreactivity (Endpoint Titers) | No. Individuals with PAIHR a | |||
|---|---|---|---|---|---|
| R. rickettsii | R. parkeri | R. bellii | R. ammblyommatis | ||
| Humans (17) | 0/0 | 0/0 | 3/17.6 (128–256) | 1/5.9 (64) | 3 R. bellii |
| Dogs (41) | 3/7.3 (64) | 0/0 | 7/17.1 (64–512) | 2/4.9 (64) | 4 R. bellii |
| Calomys tener (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Cerradomys maracajuensis (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Cerradomys scotti (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Clyomys laticeps (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Didelphis albiventris (1) | 0/0 | 0/0 | 0/0 | 1/100 (64) | |
| Gracilinanus agilis (2) | 1/50 (128) | 0/0 | 0/0 | 0/0 | 1 R. rickettsii |
| Necromys lasiurus (6) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Nectomys squamipes (4) | 0/0 | 1/25 (128) | 0/0 | 0/0 | 1 R. parkeri |
| Oecomys cleberi (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Oecomys roberti (1) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Oligoryzomys cf. mattogrossae (6) | 0/0 | 0/0 | 0/0 | 0/0 | |
| Oxymycterus delator (1) | 0/0 | 1/100 (128) | 0/0 | 0/0 | 1 R. parkeri |
| TOTAL (84) | 4/4.8 | 2/2.4 | 10/12 | 4/4.8 | |
a PAIHR, possible antigen involved in a homologous reaction. A homologous reaction was determined when the endpoint titer to a Rickettsia species was at least four-fold higher than the endpoint titers observed for the other three Rickettsia species. In this case, the Rickettsia species (or a very closely related genotype) involved in the highest endpoint titer was considered the PAIHR.