SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Beach, Robert H.; Poulos, Christine; Pattanayak, Subhrendu K..

Recent outbreaks of highly pathogenic avian influenza in Asia, Europe, and Africa have caused severe impacts on the poultry sector through bird mortality and culling, as well as resulting trade restrictions and negative demand shocks. Although poultry producers play a major role in preventing and controlling avian influenza, little research has examined the influence of their farm-level decision making on the spread of the disease. In this study, we describe farm behavior under livestock disease risk and discuss data and analyses necessary to generate sound empirical evidence to inform public avian influenza prevention and control measures.

Tipo: Journal Article

Palavras-chave: Agricultural household model; Avian influenza; Control measures; Economic epidemiology; Livestock disease; Poultry production; Food Consumption/Nutrition/Food Safety; International Relations/Trade; Livestock Production/Industries; Q12; Q18.

Ano: 2007

URL: http://purl.umn.edu/6537

An overview on avian influenza

Rev. Bras. Ciênc. Avic.

Martins,Nelson Rodrigo da Silva.

Avian influenza (AI) is considered an exotic disease in the Brazilian poultry industry, according to the National Avian Health Program (PNSA), with permanent monitoring of domestic, exotic and native avian species. Brazil presents privileged environmental conditions of reduced risk. In addition, all commercial poultry and conservation holdings are registered in state or national inventories and geographically located (GPS) for health control. Poultry health standards are adopted for the conformity to the international market, mostly for the intensified poultry destined for exportation, but also for companion exotic and native conservation facilities. Guidelines for monitoring and the diagnosis of AI are published by the PNSA and follow the standards...

ANÁLISE DOS REFLEXOS ECONÔMICOS DERIVADOS DE SURTOS DA GRIPE AVIÁRIA NO BRASIL UTILIZANDO UM MODELO DE EQUILÍBRIO GERAL COMPUTÁVEL

Palavras-chave: Avian influenza; Epidemics; Global health.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200001

Fachinello, Arlei Luiz; Ferreira Filho, Joaquim Bento de Souza.

O vírus de influenza aviária H5N1 tem se disseminado rapidamente por diversos países e continentes nos últimos anos, podendo também chegar no Brasil. A ausência e a necessidade de estimativas de impacto econômico no país, derivadas de surtos de gripe aviária em território brasileiro, motivaram a presente pesquisa. Foram simulados três cenários utilizando-se de um modelo aplicado de equilíbrio geral inter-regional, denominado TERM-BR. O primeiro cenário (Cenário I) contempla um foco da doença no Rio Grande do Norte, região Nordeste do país. O segundo (Cenário II) simula a presença de diversos focos da doença no estado de São Paulo. O terceiro (Cenário III) considera o surgimento de diversos focos presentes nos estados Rio Grande do Norte, Rondônia, São...

Assessing potential impact of avian influenza on poultry in West Africa: a spatial equilibrium model analysis

Palavras-chave: Gripe aviária; Impacto econômico; Modelos de equilíbrio geral; Avian influenza; Economic impact; General equilibrium models; International Relations/Trade; Livestock Production/Industries.

Ano: 2008

URL: http://purl.umn.edu/110071

You, Liangzhi; Diao, Xinshen.

In this paper, the authors analyze the potential economic impacts of avian influenza (AI) in West Africa, taking Nigeria as an example. They find that, depending on the size of the affected areas, the direct impact of the spread of AI along the two major migratory bird flyways would be the loss of about 4 percent of national chicken production. However, the indirect effect-consumers’ reluctance to consume poultry if AI is detected, causing a decline in chicken prices-is generally larger than the direct effect. The study estimates that Nigerian chicken production would fall by 21 percent and chicken farmers would lose US$250 million of revenue if the worst-case scenario occurred. The negative impact of AI would be unevenly distributed in the country, and...

Tipo: Report

Palavras-chave: Avian influenza; Spatial equilibrium model simulation; West Africa; Nigeria; Livestock Production/Industries.

Ano: 2006

URL: http://purl.umn.edu/55399

Avian influenza: Eco-epidemiological aspects of the virus in its natural hosts, the migratory waterfowls

RChHN

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

Avian influenza: ostriches as a disease infection source

MV&Z

Knöbl, Terezinha; Ferreira, Antônio José Piantino.

A review on the influenza virus is presented. Epidemiological and pathological aspects, clinical sings, virus characteristics and history on human and avian outbreak are described. The roles of wild birds, include ostriches, as infection source for poultry is also discussed.

Avian Influenza Threat and its Potential Impact on Demand for Chicken and Eggs

Palavras-chave: Avian influenza; Influenza virus; Ratitas; Ostriches; Poultry; Chicken influenza aviária; Vírus da influenza; Ratitas; Avestruz; Galinha.

Ano: 1999

URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3361

Liu, Kang Ernest; Huang, Min-Hsin; Hsu, Jane Lu; Lee, Hwang-Jaw.

A highly pathogenic H5N1 strain of avian influenza (AI) has been confirmed in 420 human cases and has caused 257 deaths in the world starting from 2003. Using face-to-face interviews, our data were collected by utilizing a stratified sampling scheme following the distribution of gender and age in three major metropolitan areas in Taiwan, including Taipei, Taichung, and Kaohsiung. The questionnaire was designed to retrieve information including AI knowledge, risk perceptions, and behavioral changes of two types of consumers, primary shoppers and general consumers. In total, 501 primary shoppers and 505 general consumers completed the survey in June 2007 and were recorded for analysis. The empirical results show several interesting findings, especially, that...

Biosecurity, Terrorism, and Food Consumption Behavior: Using Experimental Psychology to Analyze Choices Involving Fear

Palavras-chave: Avian influenza; Knowledge; Risk perception; Tobit model; Taiwan; Consumer/Household Economics; Livestock Production/Industries; M30.

Ano: 2009

URL: http://purl.umn.edu/49297

Just, David R.; Wansink, Brian; Turvey, Calum G..

How would a possible food safety scare influence food consumption? Using techniques from experimental psychology, a study of 103 lunchtime participants suggests that a food scare--avian influenza--would decrease consumption of the affected food by 17% if the subjects believed it was naturally occurring, and by 26% if they believed it was the result of terrorism. While individual consumption decreased, very few eliminated all consumption of the affected food. We argue that experimental psychology is essential when attempting to study behavior in food safety where hypothetical scenarios and surveys would not capture the emotional nature of the response.

Tipo: Journal Article

Palavras-chave: Avian influenza; Experimental psychology; Food safety; Terrorism; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.

Ano: 2009

URL: http://purl.umn.edu/50085

Consumer Awareness of the Avian Influenza Threat in Taiwan

Liu, Kang Ernest; Huang, Min-Hsin; Hsu, Jane Lu.

Replaced with revised version of paper 06/19/07.

Consumer Purchasing Behavior in Response to Media Coverage of Avian Influenza

Palavras-chave: Consumer awareness; Risk perceptions; Avian influenza; Taiwan; Consumer/Household Economics; Livestock Production/Industries; M30.

Ano: 2007

URL: http://purl.umn.edu/9776

Beach, Robert H.; Zhen, Chen.

Consumer concerns regarding food safety can have substantial impacts on their consumption patterns. Thus, understanding consumer response to food safety information is important for quantifying consumer response to food safety events, predicting market impacts, and developing appropriate risk communication strategies. Flexible demand systems have gained much popularity in analyzing effects of food safety outbreaks on consumer demand because of their ability to capture interactions between the demand for substitutable and complementary goods. Using Italian scanner data on meat sales, we show the economic importance of accounting for the impact of avian flu outbreaks on group expenditures for meats in a dynamic Almost Ideal Demand System (AIDS) specification...

Consumer Purchasing Behavior in Response to Media Coverage of Avian Influenza

Palavras-chave: Avian influenza; Food safety; Italy; Meat demand; Media index; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing; Q11; Q18.

Ano: 2009

URL: http://purl.umn.edu/51742

Beach, Robert H.; Zhen, Chen.

Understanding consumer response to food safety information is important for quantifying consumer response to food safety events, predicting market impacts, and developing appropriate risk communication strategies. In this study, we present a methodology for analysis of consumer response to media coverage of avian influenza and an application using Italian data.

Dynamics of Price Transmission in the Presence of a Major Food Safety Shock: Impact of H5N1 Avian Influenza on the Turkish Poultry Sector

Palavras-chave: Avian influenza; Food safety; Italy; Meat demand; Media index; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods; Q11; Q18.

Ano: 2008

URL: http://purl.umn.edu/6750

Saghaian, Sayed H.; Ozertan, Gokhan; Spaulding, Aslihan D..

This article addresses the dynamic impact of the 2005 H5N1 avian influenza outbreak on the Turkish poultry sector. Contemporary time-series analyses with historical decomposition graphs are used to address differences in monthly price adjustments between market levels along the Turkish poultry supply channel. The empirical results show that price adjustments are asymmetric with respect to both speed and magnitude along the marketing channel. Results also reveal a differential impact of the exogenous shock on producers and retailers. The findings have critical efficiency and equity implications for the supply-chain participants.

Tipo: Journal Article

Palavras-chave: Avian influenza; Chicken; Food safety shock; Price transmission dynamics; Supply chain; Turkey; Agribusiness; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; International Development; Livestock Production/Industries; Q11; Q13.

Ano: 2008

URL: http://purl.umn.edu/47274

Economic effects of avian influenza on egg producers in Turkey

Rev. Bras. Ciênc. Avic.

Demircan,V; Yilmaz,H; Dernek,Z; Bal,T; Gül,M; Koknaroglu,H.

This study determined the economic effects of avian influenza on the egg-production sector of Afyon Province, Turkey. Economic indicators were compared before and during the avian influenza outbreak. A questionnaire was conducted with 75 poultry farmers. Farms were divided into three groups according to their size. The profitability of the three farm size groups was compared during two study periods: before and during the avian influenza outbreak. The results indicate that, as compared to previous levels, farms experienced significantly reduced incomes during the avian influenza episode. While net income and profit margin were found to be negative in all three farm groups during the avian influenza period, only group I showed economic loss prior to avian...

Environmental Factors Influencing the Spread of the Highly Pathogenic Avian Influenza H5N1 Virus in wild birds in Europe

Palavras-chave: Avian influenza; Economic analysis; Laying hens.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300010

Si, Yali; Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente; Resource Ecology Group, Wageningen University; School of Resources and Environmental Science, Wuhan University; yali@itc.nl; Wang, Tiejun; Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente; tiejun@itc.nl; Skidmore, Andrew K.; Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente; skidmore@itc.nl; de Boer, Willem F. ; Resource Ecology Group, Wageningen University; Fred.deBoer@wur.nl; Li, Lin; School of Resources and Environmental Science, Wuhan University; lilin@whu.edu.cn; Prins, Herbert H.T.; Resource Ecology Group, Wageningen University; herbert.prins@wur.nl.

A large number of occurrences of the highly pathogenic avian influenza (HPAI) H5N1 virus in wild birds were reported in Europe. The relationship between the occurrence pattern and environmental factors has, however, not yet been explored. This research uses logistic regression to quantify the relationships between anthropogenic or physical environmental factors and HPAI H5N1 occurrences. Our results indicate that HPAI H5N1 occurrences are highly correlated with the following: the increased normalized difference vegetation index (NDVI) in December; intermediate NDVI in March; lower elevations; increased minimum temperatures in January; and reduced precipitation in January. A predictive risk map of HPAI H5N1 occurrences in wild birds in Europe was generated...

Tipo: Peer-Reviewed Reports

Palavras-chave: Avian influenza; Anthropogenic environmental factor; Europe; HPAI H5N1; Physical environmental factor; Risk mapping; Wild birds.

Ano: 2010

Estimating Dynamic Risk Factors for Pathogen Transmission Using Community-Level Bird Census Data at the Wildlife/Domestic Interface

Caron, Alexandre; UPR AGIRs, Department ES, Cirad, Harare Zimbabwe; UPR AGIRs, Department ES, Cirad, Montpellier France; Mammal Research Institute, Department of Entomology and Zoology, University of Pretoria, Pretoria, South Africa; alexandre.caron@cirad.fr; de Garine-Wichatitsky, Michel; UPR AGIRs, Deparmtent ES, Cirad, Harare, Zimbabwe; UPR AGIRs, Department ES, Cirad, Montpellier, France; degarine@cirad.fr; Gaidet, Nicolas; UPR AGIRs, Department ES, Cirad, Montpellier, France; nicolas.gaidet-drapier@cirad.fr; Chiweshe, Ngoni; UPR AGIRs, Department ES, Cirad, Harare, Zimbabwe; chiweshen@yahoo.co.uk; Cumming, Graeme S; Percy Fitz-Patrick Institute, DST/NRF Center of Excellence, University of Cape Town; Graeme.Cumming@uct.ac.za.

Tipo: Peer-Reviewed Reports

Palavras-chave: Avian influenza; Bridge species; Community ecology; Risk factor; Wild/domestic interface.

Ano: 2010

Is prevention better than cure? An empirical investigation for the case of Avian Influenza

Longworth, Natasha; Jongeneel, Roelof A.; Saatkamp, H.W.; Huirne, Ruud B.M..

The new EU Animal Health Strategy suggests a shift in emphasis away from control towards prevention and surveillance activities for the management of threats to animal health. The optimal combination of these actions will differ among diseases and depend on largely unknown and uncertain costs and benefits. This paper reports an empirical investigation of this issue for the case of Avian Influenza. The results suggest that the optimal combination of actions will be dependent on the objective of the decision maker and that conflict exists between an optimal strategy which minimises costs to the government and one which maximises producer profits or minimises negative effects on human health. From the perspective of minimising the effects on human health,...

Modeling of Avian Influenza Mitigation Policies Within the Backyard Segment of the Poultry Sector

Palavras-chave: Avian influenza; Prevention; Control; Livestock Production/Industries.

Ano: 2008

URL: http://purl.umn.edu/44200

Public Health and Epidemiological Considerations For Avian Influenza Risk Mapping and Risk Assessment

Elbakidze, Levan.

This study presents a conceptual model for the analysis of avian influenza mitigation options within the small poultry farm sector (backyard flocks). The proposed model incorporates epidemiological susceptible-infected-recovered (SIR) methodology into an economic cost-minimization framework. The model is used to investigate the implications and interdependencies of mitigation options that influence inter-flock contact rates of asymptomatic and symptomatic flocks, and reduce the duration of symptomatic and asymptomatic periods. The results indicates that for shorter asymptomatic periods the efforts to control inter-flock contract rates should concentrate on symptomatic flocks, while for longer asymptomatic periods the control of inter-flock contacts should...

Tipo: Journal Article

Palavras-chave: Asymptomatic and symptomatic periods; Avian influenza; Contact rates; Cost minimization; Livestock Production/Industries.

Ano: 2008

URL: http://purl.umn.edu/42463

Dudley, Joseph P.; Joseph P. Dudley, Chief Scientist, Science Applications International Corporation, Modeling and Analysis Division; Research Associate, Institute of Arctic Biology-University of Alaska Fairbanks and Department of Earth Science-University of Alaska Museum; joseph.p.dudley@saic.com.

Tipo: Peer-Reviewed Insight

Palavras-chave: Avian influenza; Biosecurity; Epidemiology; Geographic distribution; Health; Risk assessment; Risk mapping..

Ano: 2008

Risk Mapping of Highly Pathogenic Avian Influenza Distribution and Spread

Peterson, A. Townsend; ; town@ku.edu; Williams, Richard A. J.; ; ricw@ku.edu.

The rapid emergence and spread of highly pathogenic H5N1 avian influenza begs effective and accurate mapping of current knowledge and future risk of infection. Methods for such mapping, however, are rudimentary, and few good examples exist for use as templates for risk-mapping efforts. We review the transmission cycle of avian influenza viruses, and identify points on which risk-mapping can focus. We provide examples from the literature and from our work that illustrate mapping risk based on (1) avian influenza case occurrences, (2) poultry distributions and movements, and (3) migratory bird movements.

Tipo: Peer-Reviewed Reports

Palavras-chave: Avian influenza; Land birds; Poultry; Risk mapping; Wild birds..

Ano: 2008

Serological Diagnosis of Influenza A Subtype H1 on Family Poultry of Belo Horizonte, Minas Gerais and Santa Maria, Rio Grande Do Sul, in Brazil.

Rev. Bras. Ciênc. Avic.

Castro Filho,RPL; Torres,ACD; Marin,SY; Diniz,SA; Matos,JCC; Mureb,EN; Resende,M; Martins,NRS.

ABSTRACT Serum samples (n=687) from Gallus gallus domesticus were collected for the investigation of antibodies to avian influenza virus (AIV-A) in the family poultry of the surrounding counties of Santa Maria/RS and the metropolitan region of Belo Horizonte/MG, totaling twenty different counties. Additional samples of seventeen (n=17) free-flying ducks (C. moschata pure or hybrid with Anas platyrhynchos) were collected in Belo Horizonte. The chosen tests for the survey were performed as described by the World Organization for Animal Health (OIE), including agar gel immunodiffusion (AGID) for antibodies to AIV-A nucleoprotein (N) and haemagglutination- inhibition (HI) for antibodies to subtype H1. Out of the 704 serum tests performed by AGID, eight (8/704)...