prevalence of rickettsial antibody and cell-mediated reaction in cynomolgus monkeys (macaca fascicularis). | serologic studies on feral, colony-held cynomolgus monkeys indicated that 61% reacted to coxiella burnetii antigens, and 36% reacted to rickettsia conorii antigens. the results suggest that a high percentage of cynomolgus monkeys have been exposed to these organisms. | 1980 | 7007722 |