| ecology of a tick-borne spotted fever in southern brazil. | rio grande do sul is the southernmost state of brazil, bordering uruguay. clinical cases of spotted fever group (sfg) rickettsiosis were recently reported in rio grande do sul. none of these cases was lethal, and all were confirmed by seroconversion to r. rickettsii antigens. because serological cross-reactions are well known to occur between different sfg agents, the sfg agent responsible for the clinical cases remains unknown in rio grande do sul, where no rickettsial agent is known to infect ... | 2016 | 27392739 |
| factors affecting patterns of amblyomma triste (acari: ixodidae) parasitism in a rodent host. | here we offer a multivariable analysis that explores associations of different factors (i.e., environmental, host parameters, presence of other ectoparasites) with the interaction of amblyomma triste immature stages and one of its main hosts in argentina, the rodent akodon azarae. monthly and for two years, we captured and sampled rodents at 16 points located at 4 different sites in the parana river delta region. the analyses were conducted with generalized linear mixed models with a negative bi ... | 2015 | 26104965 |