On more rigorous informed consent in One Health cross-cultural livestock research

ILRI Clippings

ILRI poster prepared by Tarni Cooper (concept and text), James Wakhungu (translation) and Timothy Hall (cartoons and design) as part of a What Is Killing My Cow? project in Tanzania. The poster was one of three communication tools used for seeking informed consent, which were tested and compared for participant comprehension (of project information) and engagement with the consent process.

English translations of Kiswahili captions: Box A: In the first part of the project, farmers said they want to know more about what is making their cattle sick. Box B: Farmer will choose 1–3 sick animals for sampling and the rest of the herd will only be examined at a distance. Box C: We will take milk samples in a clean, safe manner, to minimize risk. Box D: We will take blood samples in a clean, safe manner, to minimize risk. Box E: If necessary, we will restrain cattle on…

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Reflections on food safety and risk perception

Bird’s-eye view of a colourful food market in Western Bengal, where 70% of people depend on agriculture (photo credit: Krishnasis Ghosh/Bioversity International).

In a recent blog post (11 April) published by the Global Panel on Agriculture and Food Systems for Nutrition, Delia Grace, a food safety expert at the International Livestock Research Institute (ILRI), discusses food safety and the psychology of risk perception.

She notes that when it comes to food safety, what consumers perceive to be risky and what experts consider to be the most important risks are often not the same.

Citing the example of genetically modified foods, Grace says: “. . . there is remarkable consistency from scientists and expert bodies that genetically modified foods are safe to eat, and yet in many countries, most of the public are skeptical about them.”

The blog post, Healthier food supply: what you worry about and what makes you sick is not the same, acknowledges the complexity of risk perception and the difference in how experts and the general public perceive risks and food safety.

Better evidence can play a part in countering the natural tendency to misperceive risk, she says. An example of such evidence is a new policy brief on food safety, Policy Options for a Healthier Food Supply, which reviews food safety issues that are critical to poor and vulnerable populations in low- and middle-income countries.

 

New ILRI research brief highlights outcomes of pork safety project in Vietnam

Hmong butchers selling pig meat from the indigenous Hmong black pig, recognizable from its thick layer of fat below the skin, Bac Ha, Lao Cai Province, Vietnam (photo credit: ILRI/Jo Cadilhon).

Scientists working on a project to reduce disease risks and improve food safety in smallholder pig value chains in Vietnam have published a new research brief that highlights the key outcomes of the project in capacity building and transdisciplinary research.

The 5-year project, Reducing disease risks and improving food safety in smallholder pig value chains in Vietnam (PigRisk), was launched in 2012 and is led by the International Livestock Research Institute (ILRI) in collaboration with the Hanoi School of Public Health and the Vietnam National University of Agriculture.

Among the outputs the project has achieved to date are: maps of value chain actors, assessments of production constraints of pig producers and estimates of health risks along the pork value chain.

In addition, several MSc students have been trained, publications written and presentations made to disseminate the study findings. The research team is currently developing and implementing interventions to positively influence the behaviour of value chain actors and improve food safety.

Download the brief, Changes in researcher capacity in assessing food safety risks and value chains: Insights from PigRisk team

 

ILRI pork safety project holds mid-term review in Vietnam

ILRI Asia

The PigRisk project team during the March 2016 mid-term review meeting (photo credit: ILRI/Fred Unger).

In March 2016 the PigRisk project, which focuses on food safety and pork value chains, held its mid-term review. This five-year project (2012–2017) aims to improve the livelihoods of rural and urban poor in Vietnam by creating better opportunities and incomes from pig value chains as a result of reduced risks associated with pork-borne diseases. The project is led by the International Livestock Research Institute (ILRI) and funded by the Australian Centre for International Agricultural Research (ACIAR).

The review highlighted significant achievements of the project including the development of a ‘cost of disease’ model and quantitative microbial risk assessment (QRMA) for Salmonella in consumers. This was the first time that these models had been used for food safety in Vietnam and they revealed the high economic cost to consumers from Salmonella-induced diarrheoa, whose treatment…

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ILRI scientist calls for better irrigation techniques to reduce risk of vector-borne diseases

The hidden dangers of irrigation in Kenya

By Imogen Mathers

If you are unable to listen to this audio, please update your browser or go here to download.

For farmers in Kenya, creative ways to irrigate crops can be the difference between a harvest failing or thriving. In this drought-prone country, access to reliable water sources is a daily challenge.

Few would argue with the need for better irrigation. Yet certain techniques introduced by the government to spur food production have dangerous side effects, warns Bernard Bett, a veterinary epidemiologist at the International Livestock Research Institute (ILRI) in Kenya.

The pools and canals that underpin flood irrigation create ideal conditions for mosquitoes to thrive, and are a draw for wildlife to gather and drink. This confluence of elements forms a perfect petri dish for zoonotic diseases such as malaria and dengue to circulate between wildlife, livestock, humans and insects.

Instead, Bett suggests exploring alternative techniques such as drip irrigation, a small change that can play a big part in keeping people safe from vector-borne diseases.

The interview was recorded on 18 March 2016 at One Health for the Real World, a symposium in the United Kingdom organised by the Dynamic Drivers of Disease in Africa consortium and the Zoological Society of London.

This article was originally published on SciDev.Net. Read the original article.

 

MERS-CoV antibodies found in two people in eastern Kenya

ILRI news

Transmission electron micrograph of Middle East Respiratory Syndrome coronavirus, MERS-CoV (image credit: NIAID). MERS-CoV belongs to the coronavirus family. Human coronaviruses were first identified in the mid-1960s; MERS-CoV was first reported in 2012 in Saudi Arabia. Coronaviruses can also infect animals. Named for the crown-like spikes on their surface, coronaviruses are common in people, usually causing mild to moderate upper-respiratory tract illnesses. Two exceptions are the MERS-CoV and the SARS (Severe Acute Respiratory Syndrome)-CoV.

A new study published in the science journal Emerging Infectious Diseases reports that two individuals in Kenya have tested positive for the presence of antibodies to Middle East Respiratory Syndrome coronavirus (MERS-CoV). Neither person is ill or recalls having any symptoms associated with MERS.

There is no evidence of a public health threat and scientists concluded that the infections caused little or no clinical signs of illness. But they plan follow-up studies, as this is the…

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One Health to feature at international conference on tropical veterinary medicine

The holistic concept of ‘One World-One Health’ in disease prevention and control will be among the topics of discussion at the first joint international conference of the Association of Institutions for Tropical Veterinary Medicine (AITVM) and the Society of Tropical Veterinary Medicine (STVM) which is scheduled to place on 4-8 September 2016 in Berlin, Germany.

AITVM is a foundation of 24 veterinary faculties and livestock institutes based in Africa, Asia and Europe with the mandate to improve human health and quality of life by means of increased and safe food production in tropical regions through enhancement of research, training and education in veterinary medicine and livestock production within the framework of sustainable development.

STVM is made up of scientists, veterinarians and students from more than 40 countries with common interests in tropical veterinary medicine. It is a non-profit organization whose purpose is the advancement of tropical veterinary medicine, hygiene and related disciplines.

The joint conference will bring together animal health and production experts, senior and junior career researchers and students from all over the world to discuss research and development topics including animal and zoonotic disease control, food safety, genetic resources and biodiversity, rural development and animal production, training and capacity building and animal welfare.

The conference is organized by the Institute for Parasitology and Tropical Veterinary Medicine and the Food and Agriculture Organization of the United Nations Reference Centre for Veterinary Public Health of the Freie Universität Berlin.

The co-organizing institutions are:

• the Friedrich-Loeffler Institute – Federal Research Institute for Animal Health
• the Federal Institute for Risk Assessment
• the German Veterinary Medical Society
• Vétérinaires Sans Frontières Germany
• the Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences of the Humboldt-Universität zu Berlin

The conference organizers are now accepting abstracts. The deadline for submission of abstracts is 15 March 2016.

Visit the conference website for more information.

 

Researchers develop Rift Valley fever risk map for Kenya to aid prevention and control of the disease

Cow in Kenya. A new Rift Valley fever risk map for Kenya will help develop prevention and control measures to combat the disease in the country (photo credit: ILRI/Stevie Mann).

A new Rift Valley fever risk map for Kenya, based on data from a period spanning over 50 years, will be an important tool for use in developing measures to prevent and control the disease in the country.

Rift Valley fever is a viral disease that affects animals such as cattle, sheep, camels and goats. It is also a zoonotic disease, meaning it can be transmitted from animals to people.

Rift Valley fever epidemics occur every 3 to 10 years in specific regions of the Greater Horn of Africa, southern and western Africa and in the Arabian Peninsula, resulting in high rates of infection and death among people and livestock.

In Kenya, the most recent outbreaks of the disease occurred in 1997-98 and 2006-07. Experts agree that the severity of Rift Valley fever epidemics can be reduced through the use of effective early warning systems followed by rapid implementation of prevention and control measures.

In 2008, international experts and decision-makers from eastern Africa developed a risk-based decision support framework designed to guide responses during various stages of the Rift Valley fever disease cycle.

Now, a team of researchers from Kenya, the Netherlands and the United States of America has added to the arsenal of tools to prevent and control Rift Valley fever by using surveillance data from 1951 to 2007 to develop a Rift Valley fever risk map for Kenya.

The map shows the risk of an outbreak of the disease for each of the 391 administrative divisions in the country (based on the 1999 administrative map), classifying the divisions as high, medium or low risk.

The authors of the study say that the Rift Valley fever risk map will provide the Government of Kenya with an evidence-base from which it can respond to a Rift Valley fever epidemic warning as well as develop long-term prevention and control programs in high-risk areas.

The map is published in an article in the journal PLOS ONE (25 Jan 2016): Predictive factors and risk mapping for Rift Valley fever epidemics in Kenya

Citation
Munyua, P.M., Murithi, R.M., Ithondeka, P., Hightower, A., Thumbi, S.M., Anyangu, S.A., Kiplimo, J., Bett, B., Vrieling, A., Breiman, R.F. and Njenga, M.K. 2016. Predictive factors and risk mapping for Rift Valley fever epidemics in Kenya. PLOS ONE 11(1): e0144570.

 

New research paper reviews the emerging threat of microsporidia, a group of foodborne parasites

Catch of the day, Khulna, Bangladesh. Fish are among the aquatic hosts of microsporidia, a group of emerging foodborne parasites. (photo credit: WorldFish/Yousuf Tushar).

In December 2015, the World Health Organization published a report of the first ever global and regional estimates of the burden of foodborne diseases.

The report estimates the burden of foodborne diseases caused by 31 agents – bacteria, viruses, parasites, toxins and chemicals – and shows that almost 1 in 10 people fall ill every year from eating contaminated food and 420,000 die as a result.

Children under five years of age are at particularly high risk, with 125,000 children dying from foodborne diseases every year. Africa and Southeast Asia have the highest burden of foodborne diseases.

Microsporidia are among the many contributors to the global burden of foodborne disease, although they are not currently considered to be priority foodborne parasites.

Microsporidia are a group of spore-forming parasites that infect a wide range of host organisms, including humans. People can get infected with microsporidia through ingesting contaminated food and water. People with weakened immune systems are at particularly high risk of infection.

To address the growing threat of this emerging group of pathogens, a group of experts met at a symposium entitled “Microsporidia in the animal to human food chain: An international symposium to address chronic epizootic disease”. The meeting was sponsored by the Organisation for Economic Cooperation and Development and held in Vancouver, Canada in August 2015.

Kristina Roesel, a scientist at the International Livestock Research Institute (ILRI), presented a paper entitled “Parasites in food chains”. Her presentation contributed to a collaborative review article, “Microsporidia – Emergent pathogens in the global food chain”, published in the journal Trends in Parasitology (18 Jan 2016).

The article examines the threat of microsporidia in food, water and major food production chains. The authors note that climate change may result in a greater disease burden in hosts from all environments and thus increase the contact rate between infected animals and humans. A One Health approach will, therefore, be useful to manage the risks of microsporidian infections in wildlife, food animals and humans.

 

Symposium to discuss results on estimates of global burden of foodborne diseases

Testing milk in Kenya’s informal market (photo credit: ILRI/Dave Elsworth).

Illness and death from diseases caused by contaminated food are a constant threat to public health and a significant impediment to socioeconomic development worldwide.

To help address the lack of data on the global extent of this problem, the World Health Organization established the Foodborne Disease Burden Epidemiology Reference Group (FERG) to generate the first ever estimates of the global burden of foodborne disease.

The group published its results in December 2015 in a series of scientific articles in PLOS Collections and a report titled WHO estimates of the global burden of foodborne diseases.

They include estimates of the burden of foodborne diseases caused by 31 bacteria, viruses, parasites, toxins and chemicals.

The results will be presented and discussed at a FERG symposium in Amsterdam, the Netherlands on 15-16 December 2015.

Countries will be able to use these estimates to inform national policy development aimed at improving food safety and public health throughout the food chain.