Publications

tick-borne diseases in the united states: rocky mountain spotted fever and colorado tick fever. a review.	the historical, clinical, ecological, and epidemiological features of rocky mountain spotted fever and colorado tick fever, the two important tick-borne diseases in the united states, are reviewed. rocky mountain spotted fever, once considered a disease of the past, has again become a measurable public health problem. its nationwide incidence has steadily increased since 1960 and has reached record proportions in 1976. the various factors responsible for this trend as well as for the mortality r ...	1977	19954
a review of the evidence in retrospect for a rickettsial etiology in bullis fever.	the authors have presented evidence through work done 25-30 years ago for the rickettsial etiology of bullis fever, a forgotten epidemic which occurred with over a 1,000 cases among world war ii troops in training at camp bullis, texas. rickettsiae were recovered from blood and lymph nodes of patients and from ticks, amblyomma americanum, collected in the area. all patients gave a history of tick-bites. the human and tick strains of rickettsiae, carried in chick embryo culture and in animal pass ...	1975	1103350
infections acquired in the fields and forests of the united states.	sportsmen, backpackers, and outdoor workers may present with unusual infections acquired in the fields and forests of the united states. infections to be considered in such persons with a febrile illness include rocky mountain spotted fever, colorado spotted tick fever, babesiosis, borreliosis, and lyme disease. the differential diagnoses for clinical presentations of pulmonary and gastrointestinal disease are also discussed.	1984	6549506
detection of novel bartonella strains and yersinia pestis in prairie dogs and their fleas (siphonaptera: ceratophyllidae and pulicidae) using multiplex polymerase chain reaction.	we developed a multiplex polymerase chain reaction (pcr) assay that simultaneously detects three types of flea-associated microorganisms. targets for the assay were sequences encoding portions of the glta, a 17-kda antigen, and pla genes of bartonella spp. strong et al., rickettsia spp. da rocha-lima, and yersinia pestis yersin, respectively. a total of 260 flea samples containing bloodmeal remnants were analyzed from fleas collected from abandoned prairie dog (cynomys ludovicianus) burrows at t ...	2003	12943112
sequence and expression analysis of the ompa gene of rickettsia peacockii, an endosymbiont of the rocky mountain wood tick, dermacentor andersoni.	the transmission dynamics of rocky mountain spotted fever in montana appears to be regulated by rickettsia peacockii, a tick symbiotic rickettsia that interferes with transmission of virulent rickettsia rickettsii. to elucidate the molecular relationships between the two rickettsiae and glean information on how to possibly exploit this interference phenomenon, we studied a major rickettsial outer membrane protein gene, ompa, presumed to be involved in infection and pathogenesis of spotted fever ...	2004	15528527
bartonella and rickettsia from fleas (siphonaptera: ceratophyllidae) of prairie dogs (cynomys spp.) from the western united states.	fleas of prairie dogs have been implicated in the transmission of bartonella spp. we used pcr to test dna extracts from 47 fleas of prairie dogs from 6 states. we amplified dna from 5 unique genotypes of bartonella spp. and 1 rickettsia sp. from 12 fleas collected in north dakota, oklahoma, texas, and wyoming. sequences from the bartonella spp. were similar, but not identical, to those from prairie dogs and their fleas in colorado.	2007	17918386
presence of bartonella species and rickettsia species dna in the blood, oral cavity, skin and claw beds of cats in the united states.	the purpose of this study was to determine the prevalence of bartonella species and rickettsia species dna in the blood, oral cavity, skin and claw beds of feral cats without evidence of skin disease that were housed in alabama (n = 24), florida (n = 27) and colorado (n = 32). samples were assessed by use of polymerase chain reaction assays. the bartonella species igg prevalence was also determined. while bartonella species dna was not amplified from any sample from colorado cats, it was commonl ...	2009	20178489