| epidemiology of spotted fever group and typhus group rickettsial infection in the amazon basin of peru. | a seroprevalence study for igg antibodies against spotted fever group (sfgr) and typhus group (tgr) rickettsia among humans and domestic pets was conducted in the city of iquitos, located in the amazon basin of peru. of 1,195 human sera analyzed, 521 (43.6%) and 123 (10.3%) were positive for sfgr and tgr antibodies, respectively. district of residence and participant age were associated with antibody positivity for both groups, whereas rodent sightings in the home were associated with tgr antibo ... | 2010 | 20348519 |