Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 36
Filtrar
1.
Compens Benefits Rev ; 55(1): 3-18, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38603276

RESUMO

The COVID-19 pandemic has highlighted numerous problems in the labor market in the U.S., including high and low unemployment rates, burnout of employees in many industries, and inadequate time off for caregiving and medical issues. In this manuscript, we propose that employer-sponsored paid leave is increasingly important given that the U.S. lags behind most other nations in its leave policies, and many employees, particularly those in lower-wage, part-time, or front-line occupations do not have paid leave from their employers. We first discuss the common types of paid leave. Then, we make the case that paid leave is advantageous for both employees and employers, as well as society. We conclude with specific recommendations on how to implement paid leave in organizations.

2.
J R Army Med Corps ; 165(2): 133-135, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30341168

RESUMO

The tri-Service Armed Forces Continuous Attitude Survey, commonly known as AFCAS, was introduced in 2007 to coherently assess and monitor the attitudes of Regular Service personnel in key policy and management areas and is used by groups internal and external to the Ministry of Defence. It is a statistically valid and robust survey which is annually distributed to almost 28 000 regular serving personnel. AFCAS data have been used to inform the development and evaluation of a wide range of personnel policies, including remuneration, accommodation, flexible working, career management and training. AFCAS allows for the tracking of attitudes over time, as well as the analysis of differences between respondent cohorts. AFCAS is well regarded as it is a one-stop shop survey for strategic personnel issues. This article describes the purpose, content, conduct and use of the survey to inform Armed Forces personnel policy.


Assuntos
Militares , Psicologia Militar/métodos , Inquéritos e Questionários , Atitude , Humanos , Militares/psicologia , Militares/estatística & dados numéricos , Reino Unido
3.
Ann R Coll Surg Engl ; 98(4): 254-7, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26924483

RESUMO

Introduction Patients receiving musculoskeletal allografts may be at risk of postoperative infection. The General Medical Council guidelines on consent highlight the importance of providing patients with the information they want or need on any proposed investigation or treatment, including any potential adverse outcomes. With the increased cost of defending medicolegal claims, it is paramount that adequate, clear informed patient consent be documented. Methods We retrospectively examined the patterns of informed consent for allograft bone use during elective orthopaedic procedures in a large unit with an onsite bone bank. The initial audit included patients operated over the course of 1 year. Following a feedback session, a re-audit was performed to identify improvements in practice. Results The case mix of both studies was very similar. Revision hip arthroplasty surgery constituted the major subgroup requiring allograft (48%), followed by foot and ankle surgery (16.3%) and revision knee arthroplasty surgery (11.4%) .On the initial audit, 17/45 cases (38%) had either adequate preoperative documentation of the outpatient discussion or an appropriately completed consent form on the planned use of allograft. On the re-audit, 44/78 cases (56%) had adequate pre-operative documentation. There was little correlation between how frequently a surgeon used allograft and the adequacy of consent (Correlation coefficient -0.12). Conclusions Although the risk of disease transmission with allograft may be variable, informed consent for allograft should be a routine part of preoperative discussions in elective orthopaedic surgery. Regular audit and feedback sessions may further improve consent documentation, alongside the targeting of high volume/low compliance surgeons.


Assuntos
Aloenxertos , Artroplastia do Joelho , Termos de Consentimento , Consentimento Livre e Esclarecido , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Aloenxertos/normas , Aloenxertos/estatística & dados numéricos , Criança , Termos de Consentimento/normas , Termos de Consentimento/estatística & dados numéricos , Procedimentos Cirúrgicos Eletivos , Feminino , Humanos , Consentimento Livre e Esclarecido/normas , Consentimento Livre e Esclarecido/estatística & dados numéricos , Masculino , Auditoria Médica , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
4.
J Appl Psychol ; 94(1): 207-15, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19186905

RESUMO

Because employees may be reluctant to admit to performing deviant acts, the authors of this study reexamined the commonly used self-report measure of workplace deviance developed by R. J. Bennett and S. L. Robinson (2000). Specifically, the self-report measure was modified into a non-self-report measure based on multiple other-reported assessments to address methodological concerns with self-reported information regarding deviant workplace behaviors. The authors assessed the psychometric properties of this new measure by first conducting an exploratory factor analysis, which indicated a 3-factor structure (production deviance, property deviance, and personal aggression). Subsequent confirmatory factor analysis on a different sample verified these findings. Taken together, the results suggest that the content and psychometric qualities of this non-self-report measure of workplace deviance closely represent S. L. Robinson and R. J. Bennett's (1995) original typology of workplace deviance. The potential usefulness of this measure in organizational studies is discussed. (PsycINFO Database Record (c) 2009 APA, all rights reserved).


Assuntos
Avaliação de Desempenho Profissional , Má Conduta Profissional , Comportamento Social , Análise Fatorial , Feminino , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Sudeste dos Estados Unidos
5.
Epidemiol Infect ; 137(6): 847-57, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18808727

RESUMO

Using data from a cohort study conducted by the Veterinary Laboratories Agency (VLA), evidence of spatial clustering at distances up to 30 km was found for S. Agama and S. Dublin (P values of 0.001) and borderline evidence was found for spatial clustering of S. Typhimurium (P=0.077). The evolution of infection status of study farms over time was modelled using a Markov Chain model with transition probabilities describing changes in status at each of four visits, allowing for the effect of sampling visit. The degree of geographical clustering of infection, having allowed for temporal effects, was assessed by comparing the residual deviance from a model including a measure of recent neighbourhood infection levels with one excluding this variable. The number of cases arising within a defined distance and time period of an index case was higher than expected. This provides evidence for spatial and spatio-temporal clustering, which suggests either a contagious process (e.g. through direct or indirect farm-to-farm transmission) or geographically localized environmental and/or farm factors which increase the risk of infection. The results emphasize the different epidemiology of the three Salmonella serovars investigated.


Assuntos
Doenças dos Bovinos/epidemiologia , Indústria de Laticínios , Salmonelose Animal/epidemiologia , Animais , Bovinos , Análise por Conglomerados , Estudos de Coortes , Inglaterra/epidemiologia , Feminino , Cadeias de Markov , Método de Monte Carlo , Fatores de Risco , Fatores de Tempo , País de Gales/epidemiologia
6.
J Appl Psychol ; 92(3): 722-44, 2007 May.
Artigo em Inglês | MEDLINE | ID: mdl-17484553

RESUMO

This study presents an integrative typology of personality assessment for aggression. In this typology, self-report and conditional reasoning (L. R. James, 1998) methodologies are used to assess 2 separate, yet often congruent, components of aggressive personalities. Specifically, self-report is used to assess explicit components of aggressive tendencies, such as self-perceived aggression, whereas conditional reasoning is used to assess implicit components, in particular, the unconscious biases in reasoning that are used to justify aggressive acts. These 2 separate components are then integrated to form a new theoretical typology of personality assessment for aggression. Empirical tests of the typology were subsequently conducted using data gathered across 3 samples in laboratory and field settings and reveal that explicit and implicit components of aggression can interact in the prediction of counterproductive, deviant, and prosocial behaviors. These empirical tests also reveal that when either the self-report or conditional reasoning methodology is used in isolation, the resulting assessment of aggression may be incomplete. Implications for personnel selection, team composition, and executive coaching are discussed.


Assuntos
Agressão/psicologia , Determinação da Personalidade , Personalidade , Comportamento Social , Inquéritos e Questionários , Local de Trabalho/psicologia , Adulto , Tomada de Decisões , Feminino , Humanos , Masculino
7.
Vet Rec ; 159(26): 871-80, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17189598

RESUMO

Between October 1999 and February 2001 the salmonella status of 449 dairy farms in England and Wales was determined by environmental sampling on up to four occasions. Data were collected through interview-based questionnaires, and multivariable analyses were used to identify risk factors associated with the farms either being Salmonella positive (prevalence data) or becoming Salmonella positive (incidence data). Region, herd size, month of visit and the lack of a clean visitor parking area were significantly associated with the prevalence of Salmonella species, and there was a significant trend towards an increased risk in late summer and autumn. The introduction of six- to 24-month-old cattle into a herd was associated with a reduced prevalence, but the introduction of adult cattle only, or calves with other cattle, was associated with an increased (but not significant) risk of farms being Salmonella positive. Month of visit, the lack of a clean visitor parking area, the use of part-time workers and not feeding calves whole milk, but not region or herd size, were associated with an increased incidence of salmonella.


Assuntos
Doenças dos Bovinos/epidemiologia , Indústria de Laticínios/métodos , Microbiologia Ambiental , Leite/microbiologia , Salmonelose Animal/epidemiologia , Animais , Bovinos , Inglaterra/epidemiologia , Feminino , Incidência , Análise Multivariada , Prevalência , Fatores de Risco , Estações do Ano , Inquéritos e Questionários , País de Gales/epidemiologia
8.
Vet Microbiol ; 115(1-3): 250-7, 2006 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-16490325

RESUMO

Antimicrobial use is heavily restricted on organic farms; however, few studies have been conducted to investigate the impact this has on the epidemiology of resistance in pathogenic and commensal bacteria. We investigated the persistence of antimicrobial resistant Escherichia coli within an organic beef herd over a period of 28 months. Faecal samples collected monthly from three calf cohorts and annually from adult cattle and environmental samples, were screened for the presence of ampicillin, apramycin and nalidixic acid resistant E. coli. The prevalence of ampicillin resistance ranged from 27.3 to 40.7% in the annual herd and environmental samplings (n=22-55) and was greater in the calf cohorts, with a peak cohort prevalence of >47% in all 3 years (n=16-18). Apramycin and nalidixic acid resistant E. coli were rare. Pulsed-field gel electrophoresis (PFGE) identified 10 main genotype groups within the herd, with evidence of strain transmission between different livestock groups, animal species and years. Multiple resistance was found in >44% of isolates tested, with ampicillin, neomycin, sulphamethoxazole and tetracycline carriage the commonest phenotype identified. PCR detected the presence of class 1 integrons in <5% of resistant isolates, 6/7 of which were of cattle origin. These data demonstrate that ampicillin resistant E. coli was common on the farm despite restricted antimicrobial use, although strain diversity was low. Persistence of defined genotype groups was observed between years, together with the transmission of resistant strains between different animal species on the farm.


Assuntos
Agricultura/métodos , Resistência a Ampicilina , Antibacterianos/farmacologia , Doenças dos Bovinos/tratamento farmacológico , Infecções por Escherichia coli/veterinária , Escherichia coli/efeitos dos fármacos , Animais , Antibacterianos/uso terapêutico , Bovinos , Doenças dos Bovinos/microbiologia , Doenças dos Bovinos/transmissão , Estudos de Coortes , Farmacorresistência Bacteriana Múltipla , Eletroforese em Gel de Campo Pulsado , Microbiologia Ambiental , Escherichia coli/classificação , Escherichia coli/genética , Infecções por Escherichia coli/tratamento farmacológico , Infecções por Escherichia coli/microbiologia , Infecções por Escherichia coli/transmissão , Fezes/microbiologia , Genótipo , Integrons , Testes de Sensibilidade Microbiana/veterinária , Reação em Cadeia da Polimerase/veterinária , Prevalência , Especificidade da Espécie
9.
J Appl Microbiol ; 100(2): 306-15, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16430507

RESUMO

AIMS: Produce an evidence-based ranking of the major contributing factors and sources of Campylobacter occurrence in broilers produced in England, Scotland and Wales - Great Britain (GB). METHOD AND RESULTS: Relevant data were extracted from 159 research papers and findings were grouped into 14 sources of on-farm contamination and 37 contributing factors. A relevancy score was developed to take into account various measures from each study of applicability to GB broilers and strength of findings. Results indicate that major sources of Campylobacter include a depopulation event, another house on-farm, on-farm staff, and other animals on farm. The depopulation schedule (staggered slaughter) and multiple houses on-farm were identified as contributing factors associated with increasing the risk, and those decreasing the risk were use of a hygiene barrier, parent company and certain seasons of rearing. CONCLUSIONS: Although the review was more resource intensive compared to narrative studies, the system allows an increased level of transparency and the ability to investigate patterns and trends. SIGNIFICANCE AND IMPACT OF THE STUDY: This paper provides the first evidence-based ranking of the major sources and contributing factors for Campylobacter presence in broilers in GB using a systematic review.


Assuntos
Infecções por Campylobacter/prevenção & controle , Microbiologia de Alimentos , Doenças das Aves Domésticas/prevenção & controle , Criação de Animais Domésticos/métodos , Animais , Infecções por Campylobacter/etiologia , Infecções por Campylobacter/transmissão , Galinhas/microbiologia , Abrigo para Animais
10.
Vet Rec ; 157(22): 703-11, 2005 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-16311384

RESUMO

A study of randomly selected dairy farms in England and Wales was made between October 1999 and February 2001 to estimate the prevalence and incidence of Salmonella serovars. The farms were enrolled through five milk-buying companies, which represented 63 per cent of the dairy farms in England and Wales, and they were sampled on up to four occasions (449 farms at visit 1, 272 farms at visit 2, 251 farms at visit 3 and 243 farms at visit 4). In total, 19,296 samples of pooled faecal pats and slurry were collected. The farm-specific prevalence of all serovars of Salmonella ranged from 12.1 per cent (95 per cent confidence interval [CI] 8.2 to 16.0 per cent) to 24.7 per cent (95 per cent CI 19.4 to 30.1 per cent) at each visit. The most common serovars identified were Salmonella Dublin (3.7 to 6.6 per cent farm-specific prevalence at each visit), Salmonella Agama (1.8 to 7.6 per cent) and Salmonella Typhimurium (2.6 to 4.1 per cent) The prevalence varied by region and month of sampling and increased in late summer. The incidence rate of all serovars of Salmonella was 0.43 (95 per cent CI 0.34 to 0.54) cases per farm-year at risk. There was no significant difference between the incidence rates of the common serovars S Typhimurium (0.07), S Dublin (0.06) and S Agama (0.13). A total of 29 Salmonella serovars were isolated. Few of the isolates were resistant to the 16 antimicrobial agents tested, except the isolates of S Typhimurium dt104, of which 67.9 per cent were resistant to at least five of them.


Assuntos
Salmonelose Animal/epidemiologia , Salmonella/isolamento & purificação , Animais , Tipagem de Bacteriófagos/veterinária , Bovinos , Indústria de Laticínios , Inglaterra/epidemiologia , Feminino , Geografia , Incidência , Salmonella/classificação , Salmonelose Animal/etiologia , Salmonelose Animal/microbiologia , Estudos Soroepidemiológicos , País de Gales/epidemiologia
11.
J Soc Psychol ; 144(4): 359-72, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15279327

RESUMO

The authors measured Internal State Awareness (ISA) and Self-Reflectiveness (SR) factors from the Private Self-Consciousness Scale in Iranian (N = 325) and U.S. (N = 401) university students. In both societies, positive correlations with Need for Cognition and Internal Control and negative correlations with external control and obsessive thinking confirmed ISA as an adaptive form of self-consciousness. In partial correlations in which the authors controlled for ISA, SR was associated cross-culturally with greater Obsessive Thinking. This outcome conformed with the authors' expectations that SR would have negative mental health implications, but other data revealed complexities in the SR association with adjustment. Differences between samples failed to yield any simple support for F. Fukuyama's (1992) suggestion that Iranians might be more "alienated" (pp. 236-237) in their psychological functioning. The present study most importantly offered cross-cultural evidence in favor of the claim that better measures of an introspective self-awareness need to be developed.


Assuntos
Cognição , Controle Interno-Externo , Comportamento Obsessivo/psicologia , Psicologia Social , Autoavaliação (Psicologia) , Adaptação Psicológica , Adolescente , Adulto , Árabes/psicologia , Conscientização , Dissonância Cognitiva , Comparação Transcultural , Análise Fatorial , Feminino , Humanos , Irã (Geográfico) , Masculino , Psicometria , Sudeste dos Estados Unidos , Estudantes/psicologia , Universidades
12.
J Appl Psychol ; 89(1): 150-7, 2004 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-14769127

RESUMO

Context-specific personality items provide respondents with a common frame of reference unlike more traditional, noncontextual personality items. The common frame of reference standardizes item interpretation and has been shown to reduce measurement error while increasing validity in comparison to noncontextual items (M. J. Schmit, A. M. Ryan. S. L. Stierwalt. & S. L. Powell, 1995). Although the frame-of-reference effect on personality scales scores has been well investigated (e.g., M. J. Schmit et al., 1995), the ability of this innovation to obtain incremental validity above and beyond the well-established, noncontextual personality scale scores has yet to be examined. The current study replicates and extends work by M. J. Schmit et al. (1995) to determine the incremental validity of the frame-of-reference effect. The results indicate that context-specific personality items do indeed obtain incremental validity above and beyond both noncontextual items and cognitive ability, and in spite of socially desirable responding induced by applicant instructions. The implications of these findings for personnel selection are discussed.


Assuntos
Inventário de Personalidade , Personalidade , Adolescente , Adulto , Cognição , Feminino , Humanos , Masculino , Seleção de Pessoal , Reprodutibilidade dos Testes
13.
Genet Soc Gen Psychol Monogr ; 129(3): 238-68, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15134127

RESUMO

Self-knowledge is an ideal not only within psychological theory and practice but also within the religious and philosophical foundations of many cultures. In 6 studies conducted in Iran and the United States, the authors sought to construct and to validate scales for measuring two facets of self-knowledge. Experiential self-knowledge was defined as an ongoing sensitivity to the self in the present. Reflective self-knowledge was described in terms of personal efforts to integrate experience within self-schemas developed in the past. Thirteen-item experiential self-knowledge and reflective self-knowledge scales were created by the authors using samples of Iranian and American university students. A confirmatory factor analysis verified this 2-factor structure in a second study, and these results were replicated in a 3rd study. Correlations with a broad array of self-report variables established the two scales as valid measures of adjustment. Both displayed adequate test-retest reliability. Correlations with peer reports suggested that the two factors had behavioral implications in both cultures. Reflective self-knowledge proved to be as important as educational abilities in predicting the academic performance of Americans who were motivated to attend class. Experiential self-knowledge and reflective self-knowledge also interacted to predict better grades. In short, the experiential self-knowledge and reflective self-knowledge scales operationalized cross-cultural personality processes that deserve additional research attention.


Assuntos
Características Culturais , Personalidade , Autoimagem , Inquéritos e Questionários , Adulto , Comparação Transcultural , Feminino , Humanos , Irã (Geográfico)/etnologia , Conhecimento , Masculino , Psicometria , Estados Unidos/etnologia
14.
J Appl Psychol ; 86(4): 774-80, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11519660

RESUMO

A new method is presented for conducting differential prediction analyses that makes it possible to test differential prediction hypotheses with adequate statistical power even when the sample size within a job or a job family is very small. This method, called synthetic differential prediction analysis, represents an application of the logic of synthetic validation to differential prediction analyses. The authors explain this new method and describe its application in a selection-system validation study conducted in a large organization.


Assuntos
Modelos Teóricos , Psicologia Industrial/estatística & dados numéricos , Tomada de Decisões , Previsões , Humanos
15.
Res Vet Sci ; 70(2): 163-8, 2001 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11356096

RESUMO

Three studies were conducted to investigate the transmission of Neospora caninum between cattle by the oral route. In the first study, six calves were dosed with 10(7)N caninum tachyzoites (NC LivB1) in colostrum and/or milk replacer on four occasions. In the second study, two calves and two cows were fed placental tissues from N caninum -infected cows, and, in the third study, seven uninfected calves were fostered onto N caninum -infected dams. In the first study, all six calves developed antibody responses and five calves developed antigen-specific lymphoproliferation responses, including two calves initially challenged at 1 week of age. No evidence of N caninum infection was found in the brain or heart of these calves by histology or polymerase chain reaction (PCR). In the second and third studies, there was no evidence of N caninum infection in any of the calves and cows. The results confirm that calves up to 1 week of age can be experimentally infected via the oral route, but suggest that this is not an important natural route of transmission for N caninum between cattle.


Assuntos
Doenças dos Bovinos/parasitologia , Doenças dos Bovinos/transmissão , Coccidiose/veterinária , Transmissão Vertical de Doenças Infecciosas/veterinária , Neospora/crescimento & desenvolvimento , Animais , Animais Recém-Nascidos , Anticorpos Antiprotozoários/sangue , Bovinos , Divisão Celular/fisiologia , Coccidiose/parasitologia , Coccidiose/transmissão , Colostro/parasitologia , DNA de Protozoário/química , DNA de Protozoário/isolamento & purificação , Feminino , Lactação , Masculino , Leite/parasitologia , Neospora/genética , Placenta/parasitologia , Reação em Cadeia da Polimerase , Telencéfalo/parasitologia
16.
Epidemiol Infect ; 126(1): 111-8, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11293670

RESUMO

Deterministic models were employed to investigate the biology of Trypanosoma evansi infection in the Indonesian buffalo. Models were fitted to two age-structured data sets of infection. The Susceptible-Infected-Susceptible (SIS) model was the best supported description of this infection, although the results of the analysis depended on the serological test used; the Tr7 Ag-ELISA was judged the most reliable indicator of infection. Estimated forces of infection increase with age from 1.2 to 2.0 acquisitions per buffalo per year. The buffaloes would clear infection in an estimated mean time period of 16.8 months (95% CIs: 12.5-25.9 months) since acquisition, either by drug treatment by owners or self-cure. A general discussion on the role of immunity in protozoan infections includes consideration that the fitted SIS model would be consistent with strain-specific immunity. The model may become a useful tool for the evaluation of control programmes.


Assuntos
Búfalos/parasitologia , Modelos Biológicos , Tripanossomíase/veterinária , Fatores Etários , Animais , Ensaio de Imunoadsorção Enzimática , Imunidade Inata , Incidência , Indonésia , Sensibilidade e Especificidade , Tripanossomíase/epidemiologia , Tripanossomíase/imunologia
18.
Trends Microbiol ; 8(12): 554-9, 2000 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11115751

RESUMO

Antibiotic resistance is being found with increasing frequency in both pathogenic and commensal bacteria of humans and animals. Quantifying resistance within and between bacterial and host populations presents scientists with complex challenges in terms of laboratory methodologies and sampling design. Here, we discuss, from an epidemiological perspective, how antibiotic resistance can be defined and measured and the limitations of current approaches.


Assuntos
Antibacterianos/farmacologia , Bactérias/efeitos dos fármacos , Infecções Bacterianas/epidemiologia , Resistência Microbiana a Medicamentos , Bactérias/genética , Infecções Bacterianas/microbiologia
19.
Epidemiol Infect ; 124(1): 163-72, 2000 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10722144

RESUMO

The prevalence and incidence of Trypanosoma evansi infections in village buffaloes in Central Java were estimated using parasitological tests, two antigen-detection ELISAs (2G6 Ag-ELISA and Tr7 Ag-ELISA), an antibody-detection ELISA (IgG ELISA) and a card agglutination test (CATT). Of 2387 village buffaloes tested in five districts, 4 % (95 % confidence interval [CI]: 3 %, 5 %) were positive with the microhaematocrit test (MHCT), 58 % (95 % CI: 56 %, 60 %) were positive with the 2G6 Ag-ELISA and 70 % (95 % CI: 68 %, 72 %) were positive with the Tr7 Ag-ELISA. An increasing prevalence with age was found and the proportion of positive buffaloes was highest in the over 84 months-old age-group (68 %) with the 2G6 Ag-ELISA and in the 37-60 months-old age-group (78 %) with the Tr7 Ag-ELISA. Parasitaemic buffaloes were found in more than half of the villages visited. Corrected village-specific prevalence values obtained with the two Ag-ELISAs ranged from 0% to over 100%, and prevalence differed significantly (P < or = 0.0001) between villages in four of the five districts. Overall, 10% of buffaloes tested in markets were found to be parasitaemic and 39, 56 and 47 % were found positive with the 2G6 Ag-ELISA, IgG ELISA and CATT, respectively. Incidence rates varied according to the test used and ranged from 0.22 (95 % CI: 0.09, 0.44) to 0.44 (95 % CI: 0.24, 0.76), per animal-year at risk, in two villages. The results highlight the importance of using validated diagnostic tests to obtain accurate estimates of prevalence and incidence. These parameters are needed, for example in mathematical models, for the development and evaluation of different control strategies for T. evansi infections in buffaloes.


Assuntos
Búfalos/parasitologia , Tripanossomíase/veterinária , Animais , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Feminino , Incidência , Indonésia/epidemiologia , Estudos Longitudinais , Masculino , Estudos Soroepidemiológicos , Tripanossomíase/epidemiologia
20.
Int J Parasitol ; 29(10): 1683-9, 1999 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-10608455

RESUMO

Transmission parameters of Neospora caninum infections in dairy cattle were determined in six herds with a history of Neospora-associated abortions, using an antibody-detection ELISA to detect evidence of infection. A total of 124 seropositive dams and their calves were tested at calving to estimate vertical transmission, and 154 seronegative heifers were monitored prospectively from birth for evidence of post-natal infection. The probability of vertical transmission was very high; 95.2% (95% confidence interval: 89.8%, 98.2%) of the seropositive dams produced calves that were seropositive prior to consumption of colostrum. In the prospective study, three heifers seroconverted, by 1, 8 and 16 months of age, and the overall incidence rate of seroconversion was 1.9 per 100 heifer-years at risk, ranging from 0 to 4.1 per 100 heifer-years at risk within herds. If heifers with inconclusive ELISA results were included in the analysis, the incidence rate of seroconversion was 3.8 per 100 heifer-years at risk, ranging from 0 to 8.3 per 100 heifer-years at risk within herds. This study showed that vertical transmission was the major route involved in the spread of N. caninum in these herds, and that there was only a low detectable level of horizontal transmission. However, further studies are needed to provide parasitological evidence of infection in those heifers that seroconverted.


Assuntos
Doenças dos Bovinos/transmissão , Coccidiose/veterinária , Transmissão de Doença Infecciosa/veterinária , Transmissão Vertical de Doenças Infecciosas/veterinária , Neospora , Animais , Anticorpos Antiprotozoários/sangue , Bovinos , Coccidiose/transmissão , Indústria de Laticínios , Ensaio de Imunoadsorção Enzimática , Feminino , Neospora/imunologia , Gravidez , Complicações Parasitárias na Gravidez/veterinária
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...