Impact Of Zoonoses Research Articles

Infectious disease ecology and evolution in a changing world.

Infectious disease ecology and evolution in a changing world.

Zoonoses and the Aboriginal and Torres Strait Islander population: A One Health scoping review.

With limited access to animal health services, and high disease burdens among domesticated animals, Aboriginal and Torres Strait Islander communities in Australia face higher risk of disease including zoonoses. However, we lack understanding of the contribution of often preventable zoonoses to the health of these communities, which would enable us to enhance public health strategies and improve health outcomes. We conducted a scoping review to identify the current state of evidence on zoonoses in the Aboriginal and Torres Strait Islander population. We examined the size, scope and characteristics of the evidence base and analysed the zoonoses detected in the studies within a One Health framework. We identified 18 studies that detected 22 zoonotic pathogens in animals, people, and the environment, with most studies detecting pathogens in a single One Health sector and no studies investigating pathogens in all three sectors. Findings indicate that despite the strong conceptual foundations of One Health throughout the evidence base, evidence is lacking in application of this concept. There is a need to undertake further research that prioritises Aboriginal and Torres Strait Islander leadership, considers the contribution of human, animal and environmental health factors, and investigates the prevalence and impact of zoonoses in communities through a One Health approach.

An Assessment of Knowledge Regarding the Risk of Zoonoses and Hygiene Practices among Females with Livestock in South-West Delhi, India: A Cross-Sectional Study.

Introduction:Globally, India is the largest milk producer with highest population of cattle i.e., 134 million cows and 124 million buffalos, with women accounting for 93 per cent of total employment in dairy production. The Indian subcontinent is one of the four global hot-spots at increased risk for emergence of zoonotic diseases. Health hazards occurring due to lack of awareness about the causes and impact of zoonosis on the public health are significant. In addition, fewer efforts are seen in One-Health programs in India.Objective:To assess the knowledge level regarding the risk of zoonoses and hygiene practices among rural female population with livestock. And also to assess the actual status of practices adopted in the small holder dairy farm.Materials and Methods:A cross-sectional study was conducted among 60 female populations in peri-urban area of Najafgarh, New Delhi. A structured questionnaire and checklist for observing practicing gaps were used for data collection; Knowledge level was calculated with the help of knowledge scores. Snowball sampling was used. The analysis was done with SPSS-(22). Descriptive statistics, one sample t-test, cross tabulation and Chi-square test were used.Results:Out of total score (28), the respondents got a maximum mean score of 11. Majority of respondents (75%) had low knowledge of specific zoonotic diseases and there was an observed gap in practice.Conclusion:75% of the respondents had low knowledge on specific zoonotic diseases, hence importance should be given on increasing knowledge about the correct handling of the livestock especially in female population through national-programs and strengthening One-Health efforts.

Ecosystem change and zoonoses in the Anthropocene.

Changes in land use, animal populations and climate, primarily due to increasing human populations, drive the emergence of zoonoses. Force of infection (FOI), which for these diseases is a measure of the ease with which a pathogen reaches the human population, can change with specific zoonoses and context. Here, we outline three ecosystem categories-domestic, peridomestic and sylvatic, where disease ecology alters the FOI of specific zoonoses. Human intervention is an overriding effect in the emergence of zoonoses; therefore, we need to understand the disease ecology and other influencing factors of pathogens and parasites that are likely to interact differently within ecological and cultural contexts. Planning for One Health and community ecology, such as an ecological impact assessment, is required to prepare and manage the emergence and impact of zoonoses in the Anthropocene.

Exploring local knowledge and perceptions on zoonoses among pastoralists in northern and eastern Tanzania.

BackgroundZoonoses account for the most commonly reported emerging and re-emerging infectious diseases in Sub-Saharan Africa. However, there is limited knowledge on how pastoral communities perceive zoonoses in relation to their livelihoods, culture and their wider ecology. This study was carried out to explore local knowledge and perceptions on zoonoses among pastoralists in Tanzania.Methodology and principal findingsThis study involved pastoralists in Ngorongoro district in northern Tanzania and Kibaha and Bagamoyo districts in eastern Tanzania. Qualitative methods of focus group discussions, participatory epidemiology and interviews were used. A total of 223 people were involved in the study. Among the pastoralists, there was no specific term in their local language that describes zoonosis. Pastoralists from northern Tanzania possessed a higher understanding on the existence of a number of zoonoses than their eastern districts' counterparts. Understanding of zoonoses could be categorized into two broad groups: a local syndromic framework, whereby specific symptoms of a particular illness in humans concurred with symptoms in animals, and the biomedical framework, where a case definition is supported by diagnostic tests. Some pastoralists understand the possibility of some infections that could cross over to humans from animals but harm from these are generally tolerated and are not considered as threats. A number of social and cultural practices aimed at maintaining specific cultural functions including social cohesion and rites of passage involve animal products, which present zoonotic risk.ConclusionsThese findings show how zoonoses are locally understood, and how epidemiology and biomedicine are shaping pastoralists perceptions to zoonoses. Evidence is needed to understand better the true burden and impact of zoonoses in these communities. More studies are needed that seek to clarify the common understanding of zoonoses that could be used to guide effective and locally relevant interventions. Such studies should consider in their approaches the pastoralists’ wider social, cultural and economic set up.

A quantitative approach to the prioritization of zoonotic diseases in North America: a health professionals' perspective.

BackgroundCurrently, zoonoses account for 58% to 61% of all communicable diseases causing illness in humans globally and up to 75% of emerging human pathogens. Although the impact of zoonoses on animal health and public health in North America is significant, there has been no published research involving health professionals on the prioritization of zoonoses in this region.Methodology/Principal FindingsWe used conjoint analysis (CA), a well-established quantitative method in market research, to identify the relative importance of 21 key characteristics of zoonotic diseases for their prioritization in Canada and the US. Relative importance weights from the CA were used to develop a point-scoring system to derive a recommended list of zoonoses for prioritization in Canada and the US. Study participants with a background in epidemiology, public health, medical sciences, veterinary sciences and infectious disease research were recruited to complete the online survey (707 from Canada and 764 from the US). Hierarchical Bayes models were fitted to the survey data to derive CA-weighted scores for disease criteria. Scores were applied to 62 zoonotic diseases to rank diseases in order of priority.Conclusions/SignificanceWe present the first zoonoses prioritization exercise involving health professionals in North America. Our previous study indicated individuals with no prior knowledge in infectious diseases were capable of producing meaningful results with acceptable model fits (79.4%). This study suggests health professionals with some knowledge in infectious diseases were capable of producing meaningful results with better-fitted models than the general public (83.7% and 84.2%). Despite more similarities in demographics and model fit between the combined public and combined professional groups, there was more uniformity across priority lists between the Canadian public and Canadian professionals and between the US public and US professionals. Our study suggests that CA can be used as a potential tool for the prioritization of zoonoses.

Impact of zoonoses in tropical America.

Impact of zoonoses in tropical America.