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| Registros recuperados: 316 | |
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| Leite,Anderson B; Lima,Ana RV de; Leite,Renata B; Santos,Rafael V; Gonçalves,Johnathan EL; Rocha,Eliana MM; Fontes,Gilberto. |
| The family and neighbors of a patient infected with W. bancrofti microfilariae were assessed aiming to evaluate the occurrence of cases of lymphatic filariasis in a non-endemic area in the city of Maceió, in the Brazilian state of Alagoas. The patient had previously lived in an endemic focus; however, he has been living in an area where the parasite has never been detected for the past ten years. Female ingurgitated Culex quinquefasciatus mosquitoes captured in the houses of the microfilaremic individual and of his neighbors in the non-endemic region were also examined by polymerase chain reaction (PCR) technique. The thick blood smear examination, blood membrane filtration, and rapid immunochromatography (antigen search) revealed no infected individuals... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wuchereria bancrofti; Lymphatic filariasis; Epidemiology; Culex. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000200002 |
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| Meraz,Ismail Mustafa; Arikawa,Kentaro; Nakamura,Hiromi; Ogasawara,Jun; Hase,Atsushi; Nishikawa,Yoshikazu. |
| The role of diffusely adherent Escherichia coli (DAEC) in diarrheal disease has been controversial. However, DAEC strains were recently implicated in diarrheal disease in developing countries. To clarify whether DAEC are prevalent among sporadic cases of diarrheal illness in Osaka City, Japan, E. coli strains isolated between July 1997 and March 2000 during diarrheagenic E. coli (DEC) investigation were retrospectively examined. DAEC strains were recognized among 41 (4.4%) of 924 patients and formed the biggest subgroup of DEC. Previously, we reported that some DAEC strains caused epithelial cells to secrete as much IL-8 as enteroaggregative E. coli strains did. In this study, we attempted to evaluate epidemiologically whether the ability of DAEC to induce... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DAEC; IL-8; Afa; Age; Epidemiology. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000100012 |
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| Pernet, Fabrice; Lagarde, Franck; Le Gall, Patrik; Roque D'Orbcastel, Emmanuelle. |
| We present the first large-scale, high-resolution spatial and temporal pattern of disease mortality caused by Ostreid herpesvirus 1 (OsHV-1) that has affected Pacific oyster Crassostrea gigas in France every year since 2008, in relation to local farm use. Mortality was monitored in healthy oyster spat deployed at 106 locations in the Thau Mediterranean lagoon during the epizootic that occurred in spring 2011. We conducted a field survey of farming practices in the areas where the sentinel oysters were placed before the epizootic. We found that the risk of disease mortality in sentinel oysters was higher within the bivalve farming area than outside it, suggesting that the infection pressure is much higher in areas with intensive farming activity. The risk... |
| Tipo: Text |
Palavras-chave: Aquaculture; Epidemiology; OsHV-1; Shellfish farming. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00201/31248/30662.pdf |
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| MONTALVO-CORRAL,MARICELA; REYES-LEYVA,JULIO; HERNÁNDEZ,JESÚS. |
| Avian influenza viruses produce mainly respiratory and intestinal diseases. Their relevance in the generation of pandemic strains has led to a large amount of research to understand their distribution in nature, as well as the relations that become established for the effective transmission among different hosts. Waterfowl have been recognized as their natural reservoir and they play an important role in the propagation and generation of the diversity of these viruses. The emergence of new influenza viruses with pandemic potential among the human population (H5N1 of avian origin or recombinant H1N1 with avian segments) point our lack of information on many aspects of the ecology and epidemiology of these viruses in their natural hosts to enable the... |
| Tipo: Journal article |
Palavras-chave: Avian influenza; Ecology; Epidemiology; Migratory birds. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000400008 |
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| Sivakumar, Thillaiampalam; Igarashi, Ikuo; Yokoyama, Naoaki. |
| Babesia ovata, which is transmitted by Haemaphysalis longicornis, is an intraerythrocytic protozoan parasite of cattle. Based on its morphology, B. ovata is classified as a large-type Babesia. The developmental stages of B. ovata have been described both in cattle and the tick vector. In infected adult female ticks, the parasite is transovarially transmitted to the tick eggs. The sexual reproduction of B. ovata has been demonstrated in the tick midgut. The diagnostic tools that are currently available for the specific detection of B. ovata in cattle include microscopy and polymerase chain reaction assays. The development of improved molecular and serological diagnostic tools has been constrained by the limited availability of genetic data. B. ovata has... |
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Palavras-chave: Babesia ovata; Cattle; Epidemiology; Phylogeny; Taxonomy. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4555 |
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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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| Fonseca,Belchiolina Beatriz; Soncini,Ricardo Alfredo; Gimarães,Adelia Rodrigues; Rossi,Daise Aparecida. |
| Campylobacter sp is a microaerophilic, thermotolerating Gram negative bacterium, known to be one of the main causes of food-borne human infections. Among the foods that carry these microorganisms, the chicken is outstanding. In Brazil, a large chicken exporting country, few researches are conducted about their prevalence in breeder hens and the transmission through eggs. The aim of this research was to verify the presence of Campylobacter sp in the shells and within the eggs from positive cloacal swab breeder hens. Microbiological analyses were made on cloacal swabs of 140 weighed breeder hens. The positive breeder hens were set aside and in a total of 244 of their eggs, Campylobacter sp was present in macerated shells and yolk contents during 7 weeks. Out... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter; Eggs; Chicken; Vertical transmission; Epidemiology. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400032 |
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| Fonseca,BB; Soncini,RA; Vieira,FL; Siqueira,MS; Guimarães,AR; Beletti,ME; Rossi,DA. |
| Campylobacter sp is an important agent that causes foodborne infection, particularly in food of poultry origin. Therefore, the efficient control of the transmission routes in chicken farms is of outmost importance to prevent it from spreading. In chicken farms, the main transmission route of this microorganism is horizontal, as the vertical route continues to be the object of inconclusive researches. The objective of this study was to verify the presence of Campylobacter sp in breeder hens, meconium, and other organs of day-old chicks derived from these breeders in order to obtain information on vertical transmission. Microbiological analyses were performed, using cloacal swabs from 279 breeder hens. Positive breeders were segregated, and the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter sp; Chickens; Vertical transmission; Epidemiology. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400010 |
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| HEADLEY,Selwyn Arlington; GRAÇA,Dominguita Lühers. |
| A review of the number of dogs submitted for necropsy at the Department of Veterinary Pathology of the Federal University of Santa Maria, RS, between 1985-1997 has shown that 11.7% (250/2136) had lesions and inclusion bodies characteristic of infection by canine distemper virus (CDV). Most of these cases occurred during the winter months in dogs that were less than 1.5 year old, which were submitted by residents from the city of Santa Maria. Canine distemper is considered endemic in this city. Significant differences in susceptibility were not observed between males and females. Mongrel dogs were super-represented, but dolichocephalic breeds were more affected than brachycephalic ones. Distemper encephalopathy with typical CDV inclusion bodies, especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epidemiology; Distemper virus; Dogs. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000200009 |
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| Santos-Neto,José Francisco; Ferreira,Viviane Matos; Feitosa,Caroline Alves; Martinez-Silveira,Martha Silvia; Campos,Leila Carvalho. |
| Abstract Neisseria meningitidis is a bacterium that colonizes the human nasopharynx and is transmitted by respiratory droplets from asymptomatic or symptomatic carriers. Occasionally, the pathogen invades the mucosa and enters the bloodstream, causing invasive meningococcal disease, a life-threatening infection. While meningococcal colonization is the first step in the development of invasive disease, the risk factors that predict progression from asymptomatic to symptomatic status are not well-known. The present report aimed to describe the prevalence of N. meningitidis carriers throughout the Americas, emphasizing the risk factors associated with carrier status, as well as the most prevalent serogroups in each studied population. We conducted a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neisseria meningitidis; Carrier; America; Epidemiology; Vaccine. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000400254 |
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| Pereira,Paulo Câmara Marques; Navarro,Elaine Cristina. |
| Chagas disease (CD), also known as American trypanosomiasis, is caused by the flagellated protozoan Trypanosoma cruzi, and affects an estimated 8 to 10 million people worldwide. In Latin America, 25 million people live in risk areas, while in 2008 alone, 10,000 CD-related deaths were reported. This review aimed to evaluate the challenges of CD control, future perspectives, and actions performed worldwide to control expansion of the disease and its impact on public health in Latin America. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control of Chagas disease; Epidemiology; Transmission. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100206 |
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| Dargatz, David. |
| As part of the National Animal Health Monitoring System (NAHMS ), USDA:APHIS:Veterinary Services conducted a national study of beef production, the Beef Cow/Calf Health and Productivity Audit (CHAPA). This study was designed to provide both participants and the industry with information on cow/calf health, productivity, and management practices. Data for Part 1: Beef Cow/Calf Herd Management Practices in the United States, were collected from beef producers September 29 through October 9, 1992. The National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically designed producer sample that represented all U.S. cow/calf operations in the 48 continental United States. Eighty-one percent of operations had commercial cattle... |
| Tipo: Report |
Palavras-chave: NAHMS; Epidemiology; Beef cattle; Calves breeding; Artificial insemination; Mortality; Branding; Injections; Castration; Weaning; Livestock Production/Industries. |
| Ano: 1993 |
URL: http://purl.umn.edu/32740 |
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| Registros recuperados: 316 | |
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