Publications

[prevalence of toxoplasma gondii infection in domestic and wild animals, and human groups of the amazonas region].		1980	7231162
canine cutaneous leishmaniasis in manaus, amazonas state, brazil.		1981	7330935
epidemiology of canine leishmaniasis: a comparative serological study of dogs and foxes in amazon brazil.	the paper describes a longitudinal field study of canine leishmaniasis in sympatric domestic dog and crab-eating fox (cerdocyon thous) populations. dogs were studied in house-to-house surveys, and foxes were studied by live-trapping and radio-telemetry. because serological tests (ifat in this case) for leishmaniasis are often of uncertain sensitivity and specificity, we draw conclusions comparatively. both cross-sectional (age-prevalence) and longitudinal analyses indicate that incidence in dogs ...	1994	7970884
contact rates between wild and domestic canids: no evidence of parvovirus or canine distemper virus in crab-eating foxes.	evaluating the risk of disease spill-over from domestic dogs to wildlife depends on knowledge of inter-specific contact rates and/or exposure to aetiological agents in dog environments. here, contact rates of crab-eating foxes (cerdocyon thous) with sympatric domestic dog populations were measured over 25months in amazon brazil. foxes and dogs were serologically and clinically monitored for exposure to canine parvovirus (cpv-2) and canine distemper virus (cdv), pathogens known to have caused wil ...	2001	11356314
low infectiousness of a wildlife host of leishmania infantum: the crab-eating fox is not important for transmission.	the epidemiological role of the crab-eating fox cerdocyon thous in the transmission of leishmania infantum is assessed in a longitudinal study in amazon brazil. a total of 37 wild-caught foxes were immunologically and clinically monitored, and 26 foxes exposed to laboratory colonies of the sandfly vector lutzomyia longipalpis, over a 15-month period. in total 78% (29/37) of foxes were seropositive for anti-leishmania igg on at least 1 occasion, and 38% (8/37) had infections confirmed by pcr and/ ...	2002	12458824
prevalence of ehrlichia canis (rickettsiales: anaplasmataceae) in dogs and rhipicephalus sanguineus (acari: ixodidae) ticks from brazil.	the current study evaluated the prevalence of ehrlichia canis donatien and lestoquard in domestic dogs, canis familiaris l., and rhipicephalus sanguineus (latreille) (acari: ixodidae) ticks from different areas of brazil. in monte negro county (state of rondônia, brazilian western amazon), the indirect immunofluorescence assay detected e. canis-reactive antibodies (titer > or = 40) in 58/153 (37.9%) and 40/161 (24.8%) dogs from the urban and rural areas, respectively. these values were significa ...	2007	17294930
[frequency of the antibody anti-toxocara canis in a community along the uatumã river, state of amazonas].	a cross-sectional study was carried out in the waimiri and atroari settlements in balbina, between july and october 2006, with the aims of estimating the frequency of the antibody anti-toxocara canis of the igg class and studying the epidemiological and sociocultural variables. thirty-four families were studied and 100 individuals were included, corresponding to 5% (100/2000) of the population of the settlements. the age range was 0-76 years (mean = 22.9; standard deviation = 18). the gender dis ...	2007	18200421
the first records of leishmania (leishmania) amazonensis in dogs (canis familiaris) diagnosed clinically as having canine visceral leishmaniasis from araçatuba county, são paulo state, brazil.	two cases of leishmania (leishmania) amazonensis are reported in the domestic dog (canis familiaris). these are the first records of this parasite in this species. the animals lived in the endemic visceral leishmaniasis area of araçatuba, são paulo state, brazil and were initially diagnosed, on clinical grounds, as having visceral leishmaniasis. attempted parasite isolation from inguinal lymph node aspirates was unsuccessful and the indirect immunofluorescent test for visceral leishmaniasis was ...	2007	17720321
serosurvey for selected viral infections in free-ranging jaguars (panthera onca) and domestic carnivores in brazilian cerrado, pantanal, and amazon.	we investigated the exposure of jaguar (panthera onca) populations and domestic carnivores to selected viral infections in the cerrado, amazon, and pantanal biomes of brazil. between february 2000 and january 2010, we collected serum samples from 31 jaguars, 174 dogs (canis lupus familiaris), and 35 domestic cats (felis catus). serologic analyses for antibodies to rabies virus, canine distemper virus (cdv), feline immunodeficiency virus (fiv), and for feline leukemia virus (felv) antigen were co ...	2013	23778599
serosurvey of smooth brucella, leptospira spp. and toxoplasma gondii in free-ranging jaguars (panthera onca) and domestic animals from brazil.	this study investigated the exposure of jaguar populations and domestic animals to smooth brucella, leptospira spp. and toxoplasma gondii in the cerrado, pantanal and amazon biomes of brazil. between february 2000 and january 2010, serum samples from 31 jaguars (panthera onca), 1,245 cattle (bos taurus), 168 domestic dogs (canis lupus familiaris) and 29 domestic cats (felis catus) were collected and analysed by rose bengal test for smooth brucella, microscopic agglutination test for leptospira s ...	2015	26605787
is the free-ranging jaguar (panthera onca) a reservoir for cytauxzoon felis in brazil?	this study investigated the occurrence of cytauxzoon felis and babesia spp. in free-ranging jaguars (panthera onca), domestic dogs (canis lupus familiaris) and domestic cats (felis catus) from the cerrado, amazon and pantanal biomes of brazil. blood samples were collected from 30 jaguars, 129 dogs and 22 cats for detection of the 18s rrna genes of piroplasmids. all of the jaguars from the pantanal (n=22) and cerrado (n=4) and three of four jaguars from the amazon were positive for c. felis, but ...	2017	28196774
hepatozoon spp. infects free-ranging jaguars (panthera onca) in brazil.	this study investigated the presence of hepatozoon spp. in jaguars (panthera onca) and domestic animals in the cerrado, amazon and pantanal biomes of brazil. between february 2000 and january 2010, blood samples were collected from 30 jaguars, 129 domestic dogs (canis lupus familiaris) and 22 domestic cats (felis catus) for molecular tests. all of the jaguars from the pantanal (n=22) and cerrado (n=4) and 3 of 4 jaguars from the amazon were positive for hepatozoon spp. domestic dogs (62.8%) and ...	2017	28207298
rickettsia amblyommatis infecting ticks and exposure of domestic dogs to rickettsia spp. in an amazon-cerrado transition region of northeastern brazil.	this study was performed in maranhão state, a transition area two brazilian biomes, amazon and cerrado. during 2011-2013, 1,560 domestic dogs were sampled for collection of serum blood samples and ticks in eight counties (3 within the amazon and 5 within the cerrado). a total of 959 ticks were collected on 150 dogs (9.6%). rhipicephalus sanguineus sensu lato (s.l.) was the most abundant tick (68% of all collected specimens), followed by amblyomma cajennense sensu lato (s.l.) (12.9%), amblyomma p ...	2017	28594882
survey of canine tick-borne diseases in lábrea, brazilian amazon: 'accidental' findings of dirofilaria immitis infection.	blood samples were collected from 99 domestic dogs from the urban and rural areas of the lábrea municipality, state of amazonas, brazil. canine serum samples were tested by immunofluorescence assay against rickettsia spp., which revealed that only 3.0% (1/33) and 7.6% (5/66) of the dogs from urban and rural areas, respectively, reacted positively to at least one rickettsia species. dna was extracted from canine blood and tested by a battery of pcr assays targeting protozoa of the genera babesia ...	2017	25517525