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Search Results: 1 - 10 of 85321 matches for " Fernando Rodrigues da;Vasconcelos "
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Inquérito soro-epidemiológico na Ilha de S o Luis durante epidemia de dengue no Maranh o
Vasconcelos Pedro Fernando da C.,Lima José W.O.,Raposo Maria L.,Rodrigues Sueli G.
Revista da Sociedade Brasileira de Medicina Tropical , 1999,
Abstract: Nos anos de 1995 e 1996, ocorreu em S o Luis uma epidemia de dengue (DEN), causada pelo sorotipo DEN1. Objetivando avaliar o impacto da mesma na popula o da grande S o Luis (municípios de Pa o do Lumiar - PL, S o José de Ribamar - SJR e S o Luis SL), realizamos um inquérito soro - epidemiológico aleatório, onde aplicamos um questionário. Os soros foram testados por inibi o da hemaglutina o (IH), e os resultados, negativo e positivo (resposta primária - RP e resposta secundária - RS), foram analisados utilizando os "software's" Lotus 123, Epi-info 6.0, Excel 5.0 e STATA. Coletaram-se 1217 amostras, (101 de PL, 100 de SJR e 1016 de SL). A positividade foi: 55,4% em PL, 28% em SJR e 41,4% em SL. Destes, 505 (41,2%) amostras foram positivas sendo 96 RP (7,9%) e 405 RS (33,3%). Da amostra obtida, 508 soros (227 positivos) foram do sexo masculino e 709 (278 positivos) do feminino, n o havendo diferen a estatística significativa. Houve significancia (p < 0,003) na estratifica o de acordo com a renda, sendo mais freqüente nas popula es com melhor nível sócio econ mico. Estimou-se em 401.933 infec es causadas pelo vírus dengue. Os pacientes referiram febre, cefaléia, calefrios, tontura, astenia, dor retro ocular, mialgia, artralgia, náuseas, anorexia, prurido e exantema. Há uma grande popula o sensibilizada pelo DEN-1, suscetível a outro sorotipos o que aumenta o risco de dengue hemorrágico.
Occurence and biological aspects of the clitoria tree psyllid in Brazil
Gondim Junior, Manoel Guedes Corrêa;Barros, Reginaldo;Silva, Fernando Rodrigues da;Vasconcelos, Geraldo José Nascimento de;
Scientia Agricola , 2005, DOI: 10.1590/S0103-90162005000300012
Abstract: clitoria fairchildiana (howard) is a tree largely distributed in brazil, used for urban arborization. in april 2001, the psyllid euphalerus clitoriae burckhardt & guajará was reported on this plant in the metropolitan areas of recife, pe, brazil. this report records the occurrence of e. clitoriae and studies some of its biological aspects in this area. with this purpose, c. fairchildiana leaves were sampled weekly, and e. clitoriae nymphs as well as aprostocetus sp. larvae and nymphs were collected and counted. the e. clitoriae population ranged from 2 to 90 nymphs per leaflet. the aprostocetus sp. percentage of parasitism ranged from 3 to 24%. the frequency curve for pygidium width ranged from 120 to 140; 200 to 240; 300 to 380; 460 to 580, and 720 to 820 mm for the first, second, third, fourth, and fifth instars, respectively. the incubation period for e. clitoriae eggs lasted 7.6 days. the nymphal stage lasted 5.7; 4.5; 4.8; 5.0, and 6.1 days for the first, second, third, fourth, and fifth instars, respectively. development time from egg to adult was 33.7 days. female longevity 8.6 days, with a daily fecundity of 118 eggs. the total viability of the immature stage was 74%, and the sex ratio was 0.5.
Diagnóstico sorológico de infec es por dengue e febre amarela em casos suspeitos no Estado do Pará, Brasil, 1999
Araújo Tais Pinheiro de,Rodrigues Sueli Guerreiro,Costa Maria Irene Weyl de A.,Vasconcelos Pedro Fernando da Costa
Revista da Sociedade Brasileira de Medicina Tropical , 2002,
Abstract: De junho a dezembro de 1999, foram coletadas 785 amostras de soro de pacientes com suspeita clínica de dengue e/ou febre amarela. Os pacientes foram atendidos nas unidades de saúde distribuídas pelas seis mesorregi es do Estado do Pará, Brasil. As amostras de soro foram testadas pelo método de inibi o da hemaglutina o para detec o de anticorpos para Flavivirus e pelo ensaio imunoenzimático para detec o de imunoglobulina M para dengue e febre amarela. Das amostras coletadas, 563 (71,7%) foram positivas pelo IH, e dentre estas 150 (26,6%) foram positivas pelo ELISA-IgM. O vírus dengue foi responsável pela maioria das infec es recentes em todas as mesorregi es e os casos de febre amarela detectados neste estudo foram restritos às mesorregi es Marajó e Sudeste.
Occurence and biological aspects of the clitoria tree psyllid in Brazil
Gondim Junior Manoel Guedes Corrêa,Barros Reginaldo,Silva Fernando Rodrigues da,Vasconcelos Geraldo José Nascimento de
Scientia Agricola , 2005,
Abstract: Clitoria fairchildiana (Howard) is a tree largely distributed in Brazil, used for urban arborization. In April 2001, the psyllid Euphalerus clitoriae Burckhardt & Guajará was reported on this plant in the metropolitan areas of Recife, PE, Brazil. This report records the occurrence of E. clitoriae and studies some of its biological aspects in this area. With this purpose, C. fairchildiana leaves were sampled weekly, and E. clitoriae nymphs as well as Aprostocetus sp. larvae and nymphs were collected and counted. The E. clitoriae population ranged from 2 to 90 nymphs per leaflet. The Aprostocetus sp. percentage of parasitism ranged from 3 to 24%. The frequency curve for pygidium width ranged from 120 to 140; 200 to 240; 300 to 380; 460 to 580, and 720 to 820 mm for the first, second, third, fourth, and fifth instars, respectively. The incubation period for E. clitoriae eggs lasted 7.6 days. The nymphal stage lasted 5.7; 4.5; 4.8; 5.0, and 6.1 days for the first, second, third, fourth, and fifth instars, respectively. Development time from egg to adult was 33.7 days. Female longevity 8.6 days, with a daily fecundity of 118 eggs. The total viability of the immature stage was 74%, and the sex ratio was 0.5.
Diagnóstico sorológico de infec??es por dengue e febre amarela em casos suspeitos no Estado do Pará, Brasil, 1999
Araújo, Tais Pinheiro de;Rodrigues, Sueli Guerreiro;Costa, Maria Irene Weyl de A.;Vasconcelos, Pedro Fernando da Costa;Rosa, Amélia P.A. Travassos da;
Revista da Sociedade Brasileira de Medicina Tropical , 2002, DOI: 10.1590/S0037-86822002000600006
Abstract: from june to december 1999, 785 serum samples were obtained from patients clinically suspected of having dengue or yellow fever. the patients were referred by public health centers distributed within the six mesoregions of pará state, brazil. serum samples were tested for flavivirus antibodies by hemagglutination inhibition test and for dengue and yellow fever viruses by enzyme-linked immunosorbent assay for igm detection. of the sera collected, 563 (71.7%) were positive by hi test and out of these 150 (26.6%) were positive by elisa-igm. dengue virus was responsible for most of the recent infections in all regions; yellow fever cases detected in the current study were restricted to the marajó and southeast regions.
Infec??o humana adquirida em laboratório causada pelo virus SP H 114202 (Arenavirus: família Arenaviridae): aspectos clínicos e laboratoriais
Vasconcelos, Pedro Fernando da Costa;Travassos da Rosa, Amélia Paes de Andrade;Rodrigues, Sueli Guerreiro;Tesh, Robert;Travassos da Rosa, Jorge Fernando Soares;Travassos da Rosa, Elizabeth Salbé;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1993, DOI: 10.1590/S0036-46651993000600008
Abstract: here in is described the clinical and laboratorial findings of a laboratory-acquired infection caused by the virus sp h 114202 (arenavirus, family arenaviridae) a recently discovered agent responsible for a viral hemorrhagic fever. the patient was sick for 13 days. the disease had an abrupt onset characterized by high fever (39oc.), headache, chills and myalgias for 8 days. in addition, on the 3rd day, the patient developed nauseas and vomiting, and in the 10th, epigastralgia, diarrheia and gengivorrhagia. leucopenia was seen within the 1 st week of onset, with counts as low as 2,500 white cells per mm3. counts performed after the 23th day of the onset were within normal limits. with the exception of moderate lymphocitosis, no changes were observed in differential counts. an increase in the liter of antibodies by complement fixation, neutralization and elisa (igm) was detected. suckling mice and baby hamsters were inoculated intracerebrally with 0.02 ml of blood samples collected in the 2nd and 7th days of disease. attempts to isolate the virus were also made in vero cells. no virus was isolated. this virus was isolated before in a single occasion in s?o paulo state, in 1990, from the blood of a patient with hemorrhagic fever with a fatal outcome. the manipulation of the virus under study, must be done carefully, since the transmission can occur through aerosols.
Epidemia de febre clássica de dengue causada pelo sorotipo 2 em Araguaiana, Tocantins, Brasil
Vasconcelos, Pedro Fernando da Costa;Travassos da Rosa, Elizabeth Salbé;Travassos da Rosa, Jorge Fernando Soares;Freitas, Ronaldo Barros de;Dégallier, Nicolas;Rodrigues, Sueli Guerreiro;Travassos da Rosa, Amélia Paes de Andrade;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1993, DOI: 10.1590/S0036-46651993000200005
Abstract: we report the first outbreak of dengue fever caused by dengue 2 (den 2) in araguaina, tocantins state. four hundred people of 74 families, living at s. jo?o, araguaina sul and neblina districts were questioned and then bled, in order to obtain sera to test for anti-dengue antibodies. if a person was sick, a small quantity of blood was collected for virus isolation. the main clinical picture of disease was characterized by fever, headache, myalgias, arthralgias and skin rash. were obtained 1,105 (56 females and 45 males of culex quinquefasciatus and 567 females and 437 males of aedes aegypti) mosquitoes from larvae collected in araguaina. the females of aedes aegypti obtained from larvae were allowed to feed on 8 febrile patients. the diagnosis of infection was made by both virus isolation into aedes albopictus (c6/36) cells, and serology, by hemagglutination-inhibi-tion (hi) and igm capture elisa (mac elisa). no virus was isolated from mosquitoes. although five strains of den 2 were obtained from humans, and another 111 infections were diagnosed sero-logically (igm positive). the positivity rate of the samples was 27.75% (111 of 400), while that of the families was 66.2% (45 of 72), where at least one member of the each family was infected. it was also detected 26.1% of asymptomatic infections. all age groups were affected. therefore, the infection was more frequent in females (33.5%) than males (23.8%). it was estimated in about 83,250 cases of dengue infection in araguaina between march 15 and may 31,1991. this is the first epidemic of den 2 in the brazilian amazonian region, as well as the first evidence of the spread of this serotype outside rio de janeiro.
Febre amarela: reflex?es sobre a doen?a, as perspectivas para o século XXI e o risco da reurbaniza??o
Vasconcelos, Pedro Fernando da Costa;
Revista Brasileira de Epidemiologia , 2002, DOI: 10.1590/S1415-790X2002000300004
Abstract: this paper reviews the main epidemiological, clinical, laboratorial and pathological aspects of yellow fever. it also discusses the general guidelines for the treatment of yellow fever, as well as the most recent outbreaks and epidemics of the disease in brazil. finally, the author discusses the risk of the re-urbanization of yellow fever, taking into account the high levels and dispersion of the urban vector aedes aegypti mosquito, and comments the prospects of yellow fever in the 21st century in brazil.
Yellow fever in Brazil: thoughts and hypotheses on the emergence in previously free areas
Vasconcelos,Pedro Fernando da Costa;
Revista de Saúde Pública , 2010, DOI: 10.1590/S0034-89102010005000046
Abstract: this article describes and discusses factors associated to the reemergence of yellow fever and its transmission dynamics in the states of s?o paulo (southeastern brazil) and rio grande do sul (southern) during 2008 and 2009. the following factors have played a pivotal role for the reemergence of yellow fever in these areas: large susceptible human population; high prevalence of vectors and primary hosts (non-human primates); favorable climate conditions, especially increased rainfall; emergence of a new genetic lineage; and circulation of people and/or monkeys infected by virus. there is a need for an effective surveillance program to prevent the reemergence of yellow fever in other brazilian states.
Febre amarela
Vasconcelos, Pedro Fernando da Costa;
Revista da Sociedade Brasileira de Medicina Tropical , 2003, DOI: 10.1590/S0037-86822003000200012
Abstract: yellow fever is an infectious and non-contagious disease caused by an arbovirus, the yellow fever virus. the agent is maintained in jungle cycles among primates as vertebrate hosts and mosquitoes, especially aedes in africa, and haemagogus and sabethes in america. approximately 90% of the infections are mild or asymptomatic, while 10% course to a severe clinical picture with 50% case-fatality rate. yellow fever is largely distributed in africa where urban epidemics are still reported. in south america, between 1970-2001, 4,543 cases were reported, mostly from peru (51.5%), bolivia (20.1%) and brazil (18.7%). the disease is diagnosed by serology (detection of igm), virus isolation, immunohistochemistry and rt-pcr. yellow fever is a zoonosis and cannot be eradicated, but it is preventable in man by using the 17d vaccine. a single dose is enough to protect an individual for at least 10 years, after which revaccination is recommended. in this paper, the main concepts about yellow fever as well as the fatal adverse effects of the vaccine are updated.
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