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Deadly cattle plague, once the bane of farmers, on its deathbed

30-11-2009

Sometime soon, rinderpest will officially be declared extinct, marking the first time mankind has ever eradicated an animal disease

Photo: ©FAO/F. Paladini
A technician from Ethiopia's National Veterinary Institute vaccinates cattle against rinderpest (1987).
30 November 2009, Rome - In animal health circles, it's the equivalent of the Apollo 11 moon landing: some time in the next 18 months, FAO jointly with the World Organisation for Animal Health (OIE) and other partners will officially declare one of the most devastating animal diseases known to man, rinderpest, as eradicated.

It will be the first time in history that humankind has succeeded in killing off an animal disease and only the second time a disease has been consigned to the dustbin as a result of human efforts. (The first was smallpox, in 1980.)

The victory comes after an intense decades-long campaign—spearheaded by FAO and involving a broad alliance of partners—to isolate rinderpest, also known as cattle plague, in its last few remaining pockets and then wipe it out, once and for all.

An ancient enemy

Rinderpest does not affect humans directly but it is lethal to the cattle and hoofed animals upon which they depend for food, income, and draught power. Death rates during outbreaks can approach 100%.

Caused by a virus and spread by contact and contaminated materials, rinderpest has destroyed countless millions of cattle, buffalo, yaks and their wild relatives, causing staggering economic losses and contributing to famine and social unrest for thousands of years.

Carried into Europe from Asia by invading tribes, outbreaks of rinderpest hit the Roman Empire in AD 376-386 and are suspected as having played a role in its decline and collapse.

Recurring epidemics in France during the 1700s provoked famine and drops in agricultural productivity, feeding into the unrest that culminated in the revolution of 1789.

When rinderpest was introduced into sub-Saharan Africa at the end of the 19th century it killed off 80 to 90 percent of all cattle in the region, leaving the livelihoods of farmers and pastoralists in tatters, causing widespread famine and rendering the region weak in the face of European colonization.

At its height in the 1920s, the rinderpest footprint extended from Scandinavia to the Cape of Good Hope and from the Atlantic shore of Africa to the Philippine archipelago, with one outbreak reported in Brazil and another in Australia.

In the early 1980s, the disease was still ravaging livestock herds around the world, with devastating epidemics hitting South Asia, the Middle East and Africa. Losses in Nigeria in the 1980s totalled $2 billion. A 1994 outbreak in northern Pakistan wiped out more than 50 000 cattle and buffalo before being brought under control with help from FAO.

How FAO helped turn things around

Although some countries made progress during the 20th century in dealing with rinderpest on their own territory, it continued to survive and thrive in others, forming reservoirs from which it regularly broke out.

Using a newly developed vaccine, after 1960 efforts were made to combat rinderpest on a broader scale through various regional campaigns. While successful at first, these programs usually were discontinued too soon and allowed the disease make dramatic comebacks.

Like highly pathogenic avian influenza of the H5N1 variety or the pandemic H1N1/2009 flu virus today, rinderpest seemed unstoppable.

Starting in the late 1980s, the FAO began to convene a series of regular meetings involving animal health authorities from around the globe as well key international organizations like OIE and the African Union's Inter-African Bureau for Animal Resources.

The science needed to deal with rinderpest was there. Past successes at the regional level showed that it could be combated effectively. What would it take to do away with the disease, once and for all, FAO asked?

The answer that came out of the talks: a high-level umbrella program that would weave together national and regional activities into a concerted world-wide campaign against the disease. FAO, participants agreed, was the institution best-suited to oversee such a network.

And so in 1994 the Global Rinderpest Eradication Programme was launched, after a series of consultations to gather recommendations from experts around the world. The GREP was set up to act as a spider at the centre of a web—a global coordination mechanism that would allow the international community to jointly undertake rinderpest control in a systematic and comprehensive way.

With FAO acting as the coordinating Secretariat and involving a large group of partner governments, agencies and organizations, the GREP initially focused on charting out the true geographical distribution of rinderpest, getting a better understanding of rinderpest's epidemiology, and helping countries cope with emergency situations.

Phase two involved targeted action at the local level where the virus was in circulation.

FAO channelled vast amounts of technical assistance to countries to help them first extinguish outbreaks and then put in place the systems and measures needed to stay free of it.

Activities ran the gamut. Teaching farmers how to recognize and report the disease. Establishing emergency response plans, biosecurity protocols, and national programs for monitoring and control. Training veterinarians on designing and implementing blood survey campaigns followed by clinical surveillance and setting up laboratories. (see text at right)

The Joint FAO/IAEA Division in Vienna worked to develop and then transfer new rinderpest diagnostic technology to developing countries. GREP, OIE and FAO/IAEA developed performance indicators to assess the campaign's progress.

In the face of this cohesive effort, slowly but surely rinderpest began to retreat (see graphic).

Now GREP's focus became assisting countries in undertaking the painstaking work of establishing that the rinderpest pathogen was fully eradicated in their animal populations in order to earn a disease-free status from OIE, the international certification body for animal diseases.

Between 1994 and 2009, around 170 countries and territories succeeded in eliminating rinderpest and acquired OIE certification thanks to GREP support

By early 2000, the rinderpest virus was contained to parts of the Somali Ecosystem (SES), an area covering southern Somalia and adjoining parts of Ethiopia and Kenya, where its footprint could still be found in the bloodstreams of certain animal populations. The last-ever outbreak of the disease occurred in Kenya, in 2001.

Today the last reservoir appears to have been cleared; setting the stage for a full global certification of rinderpest eradication. FAO is committed to seeing the last control activities completed next year in partnership with OIE and all concerned stakeholders.

Major gains in food production and income

FAO estimates that additional production due to rinderpest's eradication in India alone from 1965 to 1998 added up to $289 billion. The benefits in Africa have been estimated at around $1 billion per year during the same period. Billions of dollars have no doubt also been generated in other countries, such as Sri Lanka, Pakistan, Afghanistan, Iran, Iraq and Turkey.

"Most importantly, the protection of cattle in sub-Saharan Africa, the Near East and Asia has improved both food and income streams for hundreds of thousands, if not millions, of pastoral people and small farmers and helped avoid famine and the loss of draught power in agricultural communities," says Felix Njeumi of the GREP Secretariat at FAO.

There has been a gain for the conservation of biodiversity, as well, as species that may be endangered will now have one less problem to face.

Imagining the impossible

"When you think about it, it's quite remarkable that we are where we are today," says Juan Lubroth, FAO's Chief Veterinary Officer. "This is a disease that has been an absolute scourge in agriculture for millennia."

"But if you look at it another way, the solution was simple. We had the know-how. We had the vaccine. What was missing was, in the first place, adequate and targeted investment, and, secondly, a cohesive global coordinating mechanism. Once we had those, solving the problem was just a matter of time. The very substantial investments of many development partners in this Programme, first among them the European Commission, and the strong commitment of national governments and of mandated regional organizations have been instrumental in this success story," he adds.

 

Timeline
Time-lapse map showing rinderpest's retreat.
Browse an interactive timeline about
the long battle against rinderpest.

Right-click on the timeline and select
"toggle full screen" to expand it.
Rinderpest: the basics
The term rinderpest is taken from German, and means cattle-plague—a name by which it is commonly known. When occurring in severe, epidemic form, it is a serious contagious disease of cattle, buffaloes, yaks and their wild relatives.

Affected animals have a high fever, erosions in the mouth, diarrhoea and rapidly become dehydrated and emaciated, dying one week or sooner after showing the first signs of the disease.
Photo: ©FAO/F. Paladini
Rinderpest has killed countless millions of cattle over the millennia.
Key GREP achievements
Eradication of rinderpest. No known outbreaks of the disease have occurred since 2001 and surveillance indicates the rinderpest pathogen has been eliminated from its last stronghold, the Somali Ecosystem.

Creation of a model framework for coordinated international action against animal disease. GREP relied on effective partnerships with the OIE, economic blocs and regional specialised organisations such as the African Union, South Asian Association for Regional Cooperation and numerous donor agencies such as the European Commission, the U.S. Agency for International Development, the UK's Department for International Development, the government of Ireland, Sweden, and Italy's Cooperazione Italiana, and several others. However, the most important partners of GREP have been the countries themselves, according to FAO Chief Veterinary Officer Juan Lubroth.

Successful integration of regional efforts into a global network.  The GREP incorporated the concept of a coordinated Pan African Rinderpest Campaign (PARC) which covered 34 countries in Africa until 1999 and a West Asian Rinderpest Eradication Campaign (WAREC), which was to cover 11 countries in the Near East Region. The PARC was followed by the programme for Pan-African Control of Epizootics (PACE) with 30 countries and the Somali Ecosystem Rinderpest Coordination Unit (SERECU) regrouping Ethiopia, Kenya and Somalia.

Implementation of a widespread vaccination campaign.
The strategy adopted early in the global rinderpest eradication campaign was the implementation of comprehensive regional vaccination campaigns of cattle and buffaloes -- crucial in stamping out the virus.

Virus characterisation. Using molecular analyses, GREP deepened understanding of the rinderpest virus. The identification of diverse strains of the disease was key to defeating it.

Creation of a broad network of epidemiology units and laboratories. This allowed countries to detect and respond to animal diseases.

Development of new disease surveillance and participatory disease search strategies.
Contact

George Kourous
Media Relations (Rome)
(+39) 06 570 53168
(+39) 348 141 6802
george.kourous@fao.org

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