Publications

persistence of rickettsia rickettsii in a patient recovered from rocky mountain spotted fever.		1954	13212060
interference phenomenon in animal infections with rickettsiae of rocky mountain spotted fever.		1953	13037839
natural infection of the tick, amblyomma cajennense, with rickettsia rickettsii in panama.		1953	13065638
a quantitative analysis of the factors involved in the variations in virulence of rickettsiae.		1953	13076181
the epidemiology of rocky mountain spotted fever. i. the characterization of strain virulence of rickettsia rickettsii.		1953	13080263
[artificial transmission of rickettsia rickettsii (rocky mountain spotted fever) on insects, especially on body lice].		1952	13015971
comparative growth of spotted fever group rickettsia spp. strains in vero cells.	in brazil, the spotted fever group (sfg) rickettsia rickettsii and rickettsia parkeri related species are the etiological agents of spotted fever rickettsiosis. however, the sfg, rickettsia rhipicephali, that infects humans, has never been reported. the study of growth dynamics can be useful for understanding the infective and invasive capacity of these pathogens. here, the growth rates of the brazilian isolates r. rickettsii str. taiaçu, r. parkeri str. at#24, and r. rhipicephali hj#5, were eva ...	0	27508322
brazilian spotted fever: the importance of dermatological signs for early diagnosis.	brazilian spotted fever is an acute febrile infectious disease caused by rickettsia rickettsii, transmitted by tick bite. as this disease is rare and has high mortality rates in brazil, the clinical aspects and epidemiological data may help the diagnosis. we report a case of brazilian spotted fever in a 19-year-old patient who presented maculopapular exanthema in the palmar region and upper limbs, lymphadenopathy, fever, chills, headache, conjunctival hyperemia, nausea, vomiting, dyspnea, myalgi ...	0	25830998
rickettsia rickettsii in amblyomma patinoi ticks, colombia.		0	25695155
feeding period required by amblyomma aureolatum ticks for transmission of rickettsia rickettsii to vertebrate hosts.	rocky mountain spotted fever is endemic to the são paulo metropolitan area, brazil, where the etiologic agent, rickettsia rickettsii, is transmitted to humans by adult amblyomma aureolatum ticks. we determined the minimal feeding period required by a. aureolatum nymphs and adults to transmit r. rickettsii to guinea pigs. unfed nymphs and unfed adult ticks had to be attached to the host for >10 hours to transmit r. rickettsii. in contrast, fed ticks needed a minimum of 10 minutes of attachment to ...	0	25148391