A5044735925- Viral Infections and Vectors
- Vector-borne infectious diseases
- Mosquito-borne diseases and control
- Bartonella species infections research
- Viral Infections and Outbreaks Research
- Vector-Borne Animal Diseases
- Fire effects on ecosystems
- Rabies epidemiology and control
- Indigenous Health and Education
- Zoonotic diseases and public health
- Insect and Pesticide Research
- Leptospirosis research and findings
- Streptococcal Infections and Treatments
- Research on Leishmaniasis Studies
- Trypanosoma species research and implications
- Hepatitis B Virus Studies
- Herpesvirus Infections and Treatments
- Insect Pest Control Strategies
- Education during COVID-19 pandemic
- Animal and Plant Science Education
- Virology and Viral Diseases
- Hepatitis Viruses Studies and Epidemiology
- Parasite Biology and Host Interactions
- Helminth infection and control
- Plant Pathogenic Bacteria Studies
Fundação Oswaldo Cruz
2015-2024
Hospital da Senhora da Oliveira Guimarães
2024
Universidade Federal de Mato Grosso
2023
Universidade do Estado de Mato Grosso
2023
Centro de Estudos Educação e Sociedade
2023
SANE Mental Health Charity
2023
Faculdades Oswaldo Cruz
1996-2023
Centro Regional de Derechos Humanos y Justicia de Género, Corporación Humanas
2023
Instituto Geográfico Nacional
2023
Centro de Tecnologias Estratégicas do Nordeste
2023
Abstract In Brazil, Brazilian spotted fever was once considered the only tick-borne rickettsial disease. We report eschar-associated disease that occurred after a tick bite. The etiologic agent is most related to Rickettsia parkeri, R. africae, and sibirica probably widely distributed from São Paulo Bahia in Atlantic Forest.
ABSTRACT Bartonella spp. comprise an ecologically successful group of microorganisms that infect erythrocytes and have adapted to different hosts, which include a wide range mammals, besides humans. Rodents are reservoirs about two-thirds described date; some them been implicated as causative agents human diseases. In our study, we performed molecular phylogenetic analyses infecting wild rodents from five Brazilian biomes. order characterize the genetic diversity spp., robust analysis based...
During 1985-1995, illnesses clinically and epidemiologically compatible with Brazilian spotted fever were identified in 17 patients the county of Pedreira, state São Paulo, Brazil. Spotted-fever group rickettsial infection was confirmed by serology and/or immunostaining tissues 10 these patients. Immunostaining a 37-year-old pregnant patient, although antigens not demonstrable fetus. A serosurvey conducted four localities to determine prevalence subclinical or asymptomatic infections...
The Brazilian Spotted Fever (BSF) is a zoonotic disease caused by Rickettsia rickettsii and transmitted ticks of the genus Amblyomma, more frequently, Amblyomma cajennense. aim this paper was to report first molecular detection R. on sanguineus naturally infected in Rio de Janeiro, Brazil. Ticks were collected from dogs rural region Resende municipality, Janeiro State, Brazil (22º30'9.46"S, 44º42'44.29"WO), where occurred five human cases BSF 2006. identified under stereoscopic microscope...
Introduction Over the last recent years, number of Q fever cases have has increased throughout world. An epidemiological investigation was performed in area which first molecular documentation Brazil previously reported. Methods Indirect immunofluorescence assay (IFA) and PCR Coxiella burnetii targeting htpAB gene were samples from 14 dogs (blood); 1 cat 10 goats (blood, milk, vaginal swab anal swab); 3 sheep 2 horses (blood). Results Two dogs, two five seroreactive. DNA amplified 6 milk...
The age-specific prevalence of antibodies to hepatitis A virus (anti-HAV) was determined in two different population groups with low socio-economic status from Rio de Janeiro city, Brazil, whose serum samples were collected 17 years apart (Population 1, 1978; Population 2, 1995). In analysis the anti-HAV also carried out respect environmental factors. 1 composed 520 stored sera umbilical cord term neonates and children aged month 6 years. 720 adolescents ages ranging 23 overall rate 2 65.6%...
This paper reports the first isolation of a spotted fever group rickettsia from an Amblyomma cooperi ixodid collected capybara (Hydrochaeris hydrochaeris) in endemic area County Pedreira, State São Paulo, Brazil. Isolation was performed Vero cell culture and submitted to immunofluorescence, using antibody Rickettsia rickettsii-positive human serum.
A parasitological survey was carried out among Terena Indians living in the Tereré settlement municipality of Sidrolândia, State Mato Grosso do Sul, Brazil. Single samples feces from 313 were processed by means spontaneous sedimentation method. In population studied, 73.5% infected with at least one intestinal parasite or commensal. Protozoa predominated. Blastocystis hominis (40.9%), Entamoeba coli (33.2%) and histolytica/Entamoeba dispar (31.6%) most common. Bivariate analysis showed that...
This study verified the occurrence of Bartonella spp. in dogs, cats, wild mammals and their ectoparasites Petrolina Lagoa Grande Counties, Pernambuco, located a semi-arid region Northeastern Brazil. Anti-Bartonella antibodies were detected by indirect immunofluorescence assay (IFA) 24.8% dogs (27/109) 15% cats (6/40). sp. DNA was identified PCR performed on extracted from blood using primers targeting gltA ribC genes 100% (9/9) Pulex irritans Cerdocyon thous, 57.4% (35/61) P. 2.3% (1/43)...
We report a case of Q fever in man who presented with 40 days duration associated thrombocytosis. Serological and molecular analysis (polymerase chain reaction) confirmed infection Coxiella burnetii. A field study was conducted by collecting blood samples from the patient's family animals house. The wife 2 13 dogs showed seroreactivity. Our data indicate that C. burnetii may be an underrecognized cause Brazil emphasize need for clinicians to consider patients febrile illness, particularly...
Abstract To study the dynamics of wild rodent populations and identify potential hosts for hantavirus, we conducted an eco-epidemiologic in Campo Novo do Parecis, Mato Grosso State, Brazil. We detected genetically characterized Castelo dos Sonhos virus found a species pygmy rice rat (Oligoryzomys utiaritensis).
Q fever is an important cause of undifferentiated that rarely recognized or reported in Brazil. The objective this study was to look for the presence Coxiella burnetii during a dengue outbreak municipality Itaboraí, Rio de Janeiro, Brazil, where bacterium had previously infected humans and domesticated animals. Blood samples from clinically suspected patients were tested by polymerase chain reaction (PCR) C. ; DNA detected nine (3.3%) 272 patients. One coinfected with virus, which also...
Background: A range of different neurological manifestations has been reported in fetuses and adults after Zika virus (ZIKV) infection. Objective: We describe a detection the ZIKV brain tissue from multiple sclerosis (MS) patient with acute disseminated encephalomyelitis (ADEM)-like event Rio de Janeiro, Brazil. Methods: Biological samples collected during hospitalization were tested by serology molecular diagnostic for various infectious agents. Histopathological analysis was performed...
Ticks were collected from vegetation and animals at monthly intervals during one year (1993-1994) in an endemic area of Brazilian spotted fever the County Pedreira, State São Paulo. Six species ticks identified Amblyomma cajennense, cooperi, triste, Anocentor nitens, Rhipicephalus sanguineus Boophilus microplus. Only first was sufficiently numerous to permit a quantitative study with seasonal activity, although distribution source capture other observed are reported. This information is...
This preliminary report describes human and cow cases of poxvirus that recently ocurred in the State Rio de Janeiro. The electron microscopic findings were consistent with parapoxviral orthopoxviral infection. Orthopoxvirus strains isolated from cases. Detailed viral characterization by means genetical techniques is under investigation. Based on these informations, poxviral diseases should be also considered an emerging zoonosis can affect beings.
Ticks were obtained from dogs February to September of 1999 at weekly intervals, in the County Piraí, State Rio de Janeiro. Four hundred seventy four ixodids taxonomically identified, 103 Amblyomma cajennense, seven ovale, 209 Rhipicephalus sanguineus, and 155 sp. An hemolymph test associated with Giemsa's stain revealed two specimens 163 ticks tested (R. sanguineus sp), containing rickettsia-like organisms. Direct immunofluorescence verified presence spotted fever group rickettsia one...
We associated Laguna Negra virus with hantavirus pulmonary syndrome in Mato Grosso State, Brazil, and a previously unidentified potential host, the Calomys callidus rodent. Genetic testing revealed homologous sequencing specimens from 20 humans 8 mice. Further epidemiologic studies may lead to control of HPS State.