Emerging Diseases


 

Annie Cook is a graduate fellow at the International Livestock Research Institute in Kenya. In this blog post she describes a day in the life of her PhD project.

“I am a veterinary epidemiologist which means I investigate the behaviour of diseases in animal populations. I am particularly interested in zoonoses: diseases that pass from animals to people.”

“The research project I am conducting was requested by the community. During a previous study that looked at zoonotic diseases in pigs at slaughter, our research group was asked to develop a project examining disease in the workers themselves. The workers wanted to know the occupational risks they faced at work.”

Read the full post on the CGIAR Development Dialogues blog

Agriculture imposes large burdens on human health. Three million deaths a year and one-quarter of all deaths from infection are agriculture-associated, and almost all of these occur in developing countries.

Zoonotic and food-borne diseases kill 2.2 million people and sicken 2.4 billion people annually; poor people are most affected by these diseases. For 70% of agriculture-associated diseases, proven and cost-effective agricultural solutions exist.

The presentation below, made at the Tropentag 2014 conference, gives an overview of the global burden of zoonotic and food-borne diseases and some research-based interventions that can be used to prevent and control these diseases.

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Healthy lives: Tackling food-borne diseases and zoonoses

This week, ILRI staff are participating in the Tropentag 2014 International Conference in Prague, Czech Republic (17-19 September 2014). There is also a dedicated ILRI@40 side event on livestock-based options for sustainable food and nutritional security and healthy lives.  See all the posters.

Currently new diseases are emerging at the rate of one every four months and three out of four of these diseases jump species from other animals. Many of these diseases are associated with agriculture. Scientists from the International Livestock Research Institute (ILRI) led two systematic reviews of disease emergence and burden to help in prioritization. The poster below, prepared for the Tropentag 2014 conference, presents the key findings of the reviews.

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Sustainable intensification?: Implications for the emergence of diseases

This week, ILRI staff are participating in the Tropentag 2014 International Conference in Prague, Czech Republic (17-19 September 2014). There is also a dedicated ILRI@40 side event on livestock-based options for sustainable food and nutritional security and healthy lives.  See all the posters.

Over 60% of the newly identified infectious diseases that have affected people over the past few decades have been caused by pathogens originating from animals or animal products.

In agricultural areas that use more water, people face increased risk of infectious diseases, especially through zoonotic diseases (diseases transmissible from animals to people) as well as water-borne and vector-borne diseases.

The CGIAR Research Program on Agriculture for Nutrition and Health (A4NH) carries out research to maximise the nutritional and health benefits of agricultural development. The programme has four research themes: value chains, biofortification, control of agriculture-associated diseases, and integrated programs and policies.

The poster below, prepared for the Tropentag 2014 conference, presents an overview of a research carried out by the International Livestock Research Institute (ILRI), which leads the research theme on the prevention and control of agriculture-associated diseases within A4NH.

This research theme generates evidence on the prevalence, dynamics and burdens of agriculture-associated diseases by developing and testing the tools and approaches needed to better manage such diseases.

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Managing the health risks associated with agriculture: An overview of research by the International Livestock Research Institute

This week, ILRI staff are participating in the Tropentag 2014 International Conference in Prague, Czech Republic (17-19 September 2014). There is also a dedicated ILRI@40 side event on livestock-based options for sustainable food and nutritional security and healthy lives.  See all the posters.

Emerging and neglected zoonoses have often been managed sectorally, but recent decades have shown, in case after case, the benefits of One Health management.

The growing body of evidence suggests the time has come to make the bigger case for massive investment in One Health to transform the management of neglected and emerging zoonoses, annually saving the lives of millions of people as well as hundreds of millions of animals whose production supports and nourishes billions of impoverished people.

Delia Grace, a veterinary epidemiologist and food safety expert at the International Livestock Research Institute (ILRI) sets out a ‘Big 5’ framework for One Health:

  1. Join up health resources: Share health resources across human and veterinary sectors
  2. Control zoonoses in animal reservoirs
  3. Detect disease outbreaks early
  4. Prevent pandemics
  5. Add value to health research and development

Read the full post on the CGIAR Development Dialogues blog

Read an earlier full version of this story on the ILRI News blog

Delia Grace

Delia Grace presenting at a side session on ‘Food safety: Options for addressing a growing crisis’ at IFPRI’s 2020 Conference on ‘Building Resilience for Food and Nutrition Security’ (photo credit: ILRI/Susan MacMillan)

On 15-17 May 2014, the International Food Policy Research Institute (IFPRI) held an international conference in Addis Ababa, Ethiopia on building resilience for food and nutrition security, with over 700 participants in attendance including researchers, policymakers and decision-makers.

Scientists from the Food Safety and Zoonoses program of the International Livestock Research Institute (ILRI) were among the many speakers who presented at parallel sessions and side events.

Delia Grace gave a presentation on food safety in informal markets during a side event on Food safety: Options for addressing a growing crisis. She also spoke on dealing with food safety, nutrition, and public health crises during one of the parallel sessions.

Hung Nguyen-Viet spoke on food-borne diseases and public health shocks in East Asia and the Pacific while Bernard Bett presented on managing impacts from infectious disease outbreaks in dryland areas of East Africa.

More ILRI reports from the conference

Visit the conference website for more information and to access more of the conference resources.

Farming in the highlands of Ethiopia

Livestock farming in the highlands of Ethiopia (photo credit: ILRI/Apollo Habtamu).

One Health refers to the collaborative effort of multiple disciplines to attain optimal health for people, animals and the environment. Although the usefulness of the One Health approach is widely appreciated, thanks to a growing body of evidence, its uptake remains limited and health management is still largely organized by sector.

How, then, can One Health proponents build a compelling business case for it? A new article published in the Onderstepoort Journal of Veterinary Research (23 April 2014) may be of help; it outlines a pathway to develop the business case for One Health.

It also identifies five key areas where One Health is likely to make a difference. These are:

  1. sharing health resources between the medical and veterinary sectors;
  2. controlling zoonotic diseases in animal reservoirs;
  3. early detection of and response to emerging diseases;
  4. prevention of pandemics; and
  5. generating insights and adding value to health research and development.

The literature reviewed suggests that every dollar invested in One Health would yield five dollars worth of benefits. Therefore, increased investment in One Health on a large scale has the potential to transform the management of emerging and neglected zoonotic diseases and save the lives of millions of people and animals.

The article is authored by Delia Grace, veterinary epidemiologist and food safety specialist at the International Livestock Research Institute (ILRI). She heads ILRI’s research program on food safety and zoonoses as well as the agriculture-associated diseases theme of the CGIAR Research Program on Agriculture for Nutrition and Health (A4NH).

Access the article here

Citation
Grace D. 2014. The business case for One Health. Onderstepoort Journal of Veterinary Research 81(2), 6 pages.

 

Live chicken vendor

A live chicken vendor weighs a chicken in Hung Yen province, Vietnam (photo credit: ILRI/Nguyen Ngoc Huyen).

More than 6 out of 10 human infectious diseases are zoonotic (can be passed from animals to people). Southeast Asia is considered one of the hotspot areas for the emergence of zoonotic diseases. The rapid growth of economies and human populations have led to livestock intensification, land use changes and disruption in wildlife habitats, all of which are ideal for the emergence of zoonotic diseases.

From 2008 to 2013, the International Livestock Research Institute (ILRI) led an action research project on zoonotic diseases in six countries in Southeast Asia: Cambodia, China, Indonesia, Laos, Thailand and Vietnam.

Each country team comprised individuals and institutions with knowledge of ecohealth, representing multiple disciplines carrying out research on zoonotic emerging diseases. The project aimed to build ecohealth capacity and learn about the process of adopting the ecohealth approach in the country contexts.

The project has published three new policy briefs that highlight some of the key outcomes on stakeholder engagement processes, raising awareness of zoonotic diseases, and capacity building in One Health and ecohealth in Southeast Asia.

The International Development Research Centre (IDRC) funded the project.

Visit the project website for more information

Live chicken vendor

Live chicken on sale in Hung Yen province, Vietnam (photo credit: ILRI/Nguyen Ngoc Huyen).

Can we predict the next global pandemic? How can we ensure that we are prepared to tackle the next global disease epidemic?

Ten years after the SARS pandemic, Alok Jha, a science correspondent at The Guardian, examines a new human-animal virus surveillance project in Vietnam as part of his investigation into the possibility of predicting the next global pandemic.

Read his article in The Guardian: A deadly disease could travel at jet speed around the world. How do we stop it in time?

Listen to his science documentary on BBC Radio 4: The Next Global Killer

Orma Boran cattle crossing a river in Kenya

Orma Boran cattle crossing a river in Kenya. A new research update by the Drivers of Disease in Africa Consortium offers insights into the drivers of Rift Valley fever in Kenya (photo credit: ILRI/R. Dolan)

The Dynamic Drivers of Disease in Africa Consortium has published five situation analysis research updates, one for each of its case study countries. Each update outlines the background to the case study disease being investigated, the key questions the research team is exploring, some of the knowns and unknowns, and the research methodologies being followed.

Bernard Bett, a veterinary epidemiologist at the International Livestock Research Institute (ILRI) is the leader of the Kenya team that is exploring the drivers of Rift Valley fever in Kenya.

The updates are available for download from the links below (PDF):

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