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| Registros recuperados: 23 | |
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| Dantas-Torres,F.. |
| Bats are very interesting animals: they are the unique flying mammals, have developed a highly sophisticated echolocation system, and have become specialized to eat different types of diets. Hematophagous (vampire) bats are those specialized to feed solely on blood and have served as a source of inspiration for researchers as well as for writers. Vampire bat attacks on humans have moved from the realm of science fiction to reality in Latin America and bats (including non-hematophagous ones) have assumed an important role in the transmission of rabies virus to humans. This article discusses the emerging role of bats as rabies virus transmitters, with particular emphasis on the role of hematophagous bats in the epidemiology of human rabies in Latin America.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabies; Epidemiology; Disease transmission; Chiroptera. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000200002 |
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| Palo, Thomas R; Mid-Sweden University; Thomas.palo@miun.se. |
| Tularemia is caused by the bacterium Francisella tularensis, but the natural reservoir is unknown and environmental conditions for outbreaks in mammals and man are poorly understood. The present study analyzed the synchrony between the North Atlantic Oscillation (NAO) index, the number of human cases of tularemia reported in Sweden, and the density of hares. Climate variation at a lag of 2 yr explained as a single factor ~ 27% of the variation in the number of tularemia cases over time. A low NAO index, indicating cold winters, and low water flow in rivers during the coming summer were associated with high numbers of human cases of tularemia 2 yr later. The number of mountain hares was not related to NAO or to the number of cases of tularemia. The change... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Tularemia; Climate; North Atlantic Oscillation index; Disease transmission; Global warming; Francisella tularensis; Lepus timidus. |
| Ano: 2005 |
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| Curti,Maura Cristiani de Moura; Silveira,Thaís Gomes Verzignassi; Arraes,Sandra Mara Alessi Aristides; Bertolini,Dennis Armando; Zanzarini,Paulo Donizeti; Venazzi,Eneide Aparecida Sabaini; Fernandes,Andrea Cláudia Silva; Teixeira,Jorge Juarez Vieira; Lonardoni,Maria Valdrinez Campana. |
| OBJECTIVE: To evaluate clinical, epidemiological and laboratorial aspects for the understanding of the disease characteristics and its relationship with diagnostic tests. METHODS: A retrospective, descriptive and analytical study involving 2,660 American cutaneous leishmaniasis (ACL) suspected patients from southern Brazil was undertaken between April 1986 and December 2005. Data on population characteristics and laboratory tests were obtained. Diagnostic laboratory tests used were direct search for Leishmania spp. (DS), Montenegro skin test (MST) and indirect immunofluorescent assay (IFA). RESULTS: 62.3% of patients were positive for at least one laboratory test. DS test was positive in 65.1%; MST in 92.3% and IFA in 70.0%. Although Cohen's Kappa test did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clinical laboratory techniques; Disease transmission; Infectious; Cutaneous leishmaniasis; Epidemiology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100003 |
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| Senise,J.F.; Palacios,R.; Tanno,Z.N.; Lunardi,L.; Waghabi,G.R.; Vaz,M.J.R.; Diaz,RS.; Castelo,A.. |
| It is currently recommended that antiretroviral prophylaxis to prevent mother-to-child transmission (MTCT) of HIV be initiated at 14 weeks of gestation. However, the relevance of early-gestation HIV viral load level for intrauterine MTCT is unknown. The objective of this study was to determine the relationship between prenatal maternal viral load and intrauterine MTCT. Records of HIV-infected pregnant women in two centers in Brazil, from 1999 to 2004 were analyzed. Three pregnancy periods were considered: earlier than 14 weeks, 14 to 27 6/7 weeks, and 28 weeks of gestation or more. Peripartum HIV exposure was also computed. Maximum viral load in each period was the measure of HIV exposure. Four hundred fifty-seven HIV-infected pregnant women were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HIV-1; Disease transmission; Vertical transmission; Antiretroviral therapy; Highly active; Brazil; Viral load. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000400009 |
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| Fuhrmann, Marine; Petton, Bruno; Quillien, Virgile; Faury, Nicole; Morga, Benjamin; Pernet, Fabrice. |
| Mortality of young Pacific oysters Crassostrea gigas associated with the ostreid herpesvirus 1 (OsHV-1) is occurring worldwide. Here, we examined for the first time the effect of salinity on OsHV-1 transmission and disease-related mortality of C. gigas, as well as salinity-related effects on the pathogen itself. To obtain donors for OsHV-1 transmission, we transferred laboratory-raised oysters to an estuary during a disease outbreak and then back to the laboratory. Oysters that tested OsHV-1 positive were placed in seawater tanks (35‰, 21°C). Water from these tanks was used to infect naïve oysters in 2 experimental setups: (1) oysters acclimated or non-acclimated to a salinity of 10, 15, 25 and 35‰ and (2) oysters acclimated to a salinity of 25‰; the... |
| Tipo: Text |
Palavras-chave: Bivalve; Herpesviridae; Infection; Disease transmission; Risk analysis. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00350/46100/45781.pdf |
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| ANDRIOLI, A.; GOUVEIA, A. M. G.; PINHEIRO, R. R.. |
| A partir de 1976, importações de caprinos de raças exóticas, procedentes de vários países, buscaram a introdução de potencial genético leiteiro, tendo ocorrido também a efetiva introdução de agentes infecciosos no Brasil pela importação de caprinos sem adequados critérios sanitários, com consequente dispersão de doenças infecciosas entre os rebanhos nacionais, dentre elas a CAE - artrite encefalite caprina. Os avanços das técnicas de conservação de sêmen, aliados ao aumento da importância econ0mica da caprinocultura favorecem o seu intercâmbio nacional e internacional. Somando-se a isto, a inseminação artificial possibilita a concepção de um expressivo número de fêmeas, num curta intervalo de tempo, no entanto, pouco se sabe do risco da transição de... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: CAEV; Artrite Encefalite Caprina; Caprine arthritis encephalit virus; Semen diluents.; PCR; Caprino; Reprodução animal; Sêmen; Seleção; Transmissão de doença; Goats; Reproduction; Disease transmission; Infection.. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/531309 |
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| Rombaut, G.; Dhert, P.; Vandenberghe, J.; Verschuere, L.; Sorgeloos, P.; Verstraete, W.. |
| The effect of bacterial strains on the growth rate of rotifers, Brachionus plicatilis, was determined under monoxenic conditions. The first objective was to obtain sterile rotifer cultures starting from rotifer resting eggs using merthiolate or glutaraldehyde as disinfectant. Sterile rotifer cultures were obtained, without affecting the hatching ability of the resting eggs, when 0.05 µl/l glutaraldehyde was used. This disinfection procedure was used to examine the effect of 20 bacterial strains, isolated from well-performing live-feed production systems, on the population growth rate of rotifers cultured under monoxenic conditions. Five out of the 20 bacterial strains tested were able to improve significantly the asexual reproduction of rotifers. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture; Aquaculture techniques; Bacterial diseases; Disease transmission; Disinfection; Hatching; Zooplankton; Zooplankton culture; Brachionus plicatilis; Rotifera. |
| Ano: 1999 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4030 |
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| Castro,Mariana Monteiro de; Prezoto,Helba Helena Santos; Fernandes,Elisa Furtado; Bueno,Odair Correa; Prezoto,Fábio. |
| Ants inhabit several types of natural and urban habitats, where they successfully nest. In urban environments, the hospitals should be considered priority for studies, as ants pose risks to human health due to their pathogen carrying potential. We aimed at surveying the literature about studies on ants in hospital settings in Brazil in the past 20 years. We found 40 papers in 22 journals, the first one published in 1993. Among them, 26 papers assessed pathogenic microorganisms on ants. We recorded 59 ant species, being Tapinoma melanocephalumthe most common. The Minas Gerais and São Paulo states had the largest number of published papers. Mato Grosso do Sul and Rio Grande do Sul showed the highest number of species. Exotic ant species were recorded in all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cross infection; Disease transmission; Microorganisms; Pest control. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100077 |
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| Registros recuperados: 23 | |
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