Keynote presentation by Bernard Bett and Jimmy Smith at the Regional Conference on Zoonotic Diseases in Eastern Africa, Naivasha, Kenya, 9–12 March 2015.
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Healthy people, animals and ecosystems: The role of CGIAR research
1. Healthy people, animals and ecosystems:
The role of CGIAR research
Bernard Bett, Veterinary Epidemiologist, ILRI
Jimmy Smith, Director General, ILRI
Regional Conference on Zoonotic Diseases in Eastern Africa
Naivasha, Kenya
9–12 March 2015
2. Key messages
1
FOOD SECURITY
A key role for
developing
countries
3 HEALTHY PEOPLE
Human health is
influenced by
diseases endemic
in and emerging
from animals
2 HEALTHY ANIMALS
Food security
depends on
better animal health
4 HEALTHY
ECOSYSTEMS
Agriculture
impacts ecosystem
health
4. Levels of food insecurity in eastern Africa
• 13.3 million people
(about 10%) in need of
humanitarian
assistance
• Contributing factors:
o Low productivity of the
livestock sector
o Heavy reliance on crop-
fed agriculture
o Conflicts
o High levels of poverty
USD $1/day 18 – 59%
USD $2/day 49 – 99%
Source: FEWSNET
5. Gaps between food supply and demand
Agriculture – source of food and income for up to 90% of
the population in the region
• Human population has been increasing by 2.55% per year [2007
– 2017]
• Projections to the 2030, demand for meat will increase by 3.7%
and milk – 2.7%
• Projected growth rates for livestock numbers, meat and milk
production
Project change
Total livestock numbers 1.41%
Total meet consumption 2.84%
Total milk production 2.95%
Source: FAO, 2007
6. Food security and sustainability
Bridging the gaps between demand and supply – global
level
• 60% more food than is produced now will be needed
• 75% of this must come from producing more food from the same
amount of land
• The higher production must be achieved while reducing poverty
and addressing environmental, social and health concerns
• This greater production will have to be achieved with
temperatures that may be 2−4 degrees warmer than today’s
9. Pig farming and zoonotic diseases
• Pig farming – expanding in eastern Africa,
particularly in Uganda
Total population rose from 0.19 million to 3.2 million
between 1980 – 2008 in the country
• >70% of pigs produced in small holder
production systems
• Close interactions between pigs and
humans/wildlife
10. • 30% of pigs sampled had rotavirus, family reoviridae
Pigs – reservoirs for many viruses, some zoonotic
Amimo et al., 2015. Vet Microbiol.
Bacteriophages
17%
Astroviridae
26%
Parvoviridae
6%
Reoviridae
11%
Picornaviridae
6%
Circoviridae
1%
Posavirus
2%
Picobirnaviridae
1%
Plant viruses
17%
others
10%
Unassigned
viruses
3%
Astroviridae
50%
Parvoviridae
11%
Reoviridae
21%
Picornaviridae
11%
Circoviridae
1%
Posavirus
5%
Picobirnaviridae
1%
0.0
20.0
40.0
60.0
80.0
100.0
Busia_Kenya
Teso_Kenya
Busia_Uganda
Tororo_Uganda
1-5 pigs
6-10 pigs
>10 pigs
nursing
Postweaned (3-4mo)
Growers (5-6mo)
Free range
Housed
Housed;Free range
Tethered
Tethered;Free range
Housed;Tethered
Housed;Tethered;Free range
DistrictsHerdsizeAgeManagementsystems
Prevalence of group A rotaviruses (%)
11. Pigs as a potential reservoir for Ebola virus?
Niche map for Ebola Pig population density
Poverty map Sampling design
Eliza Smith, BVSc, ILRI/KYEEMA Graduate Fellow
12. Safe Food Fair Food project
Risk analysis for food safety/zoonoses along
the value chains
Lots of capacity building – actors/partners
Launched a book synthesizing the various
activities conducted
https://cgspace.cgiar.org/handle/10568/42438
Policy briefs
Roesel Kristina, ILRI Uganda
13. Multipathogen surveys in dairy value chain -
Tanzania
DISEASE % POSITIVE N % FARMERS
REPORTING DISEASE
AS COMMON
Q fever 11.2 392 -
East Coast Fever 31.8 402 37
Theileriosis 10.2 402 --
Anaplasmosis 31.6 402 18
Babesiosis 21.4 402 --
Brucellosis 11.4 403 0.7
CBPP 18.1 381 22
Bovine Respiratory Syncytial Virus Ŧ
25Infectious Bovine Rhinotracheitis Ŧ
Bovine Parainfluenza Virus Type 3 Ŧ
Bovine Viral Diarrhoea Virus Ŧ --
Neospora Ŧ --
Silvia Alonso – Scientist, ILRIŦ- Lab work in progress
14. Land use change and zoonotic diseases - Kenya
20 0 20 40 60 80 Kilometers
N
Open shrubs (65-40% crown cover)
Very open shrubs (40-15% crown cover)
Closed herbaceous vegetation on
permanently flooded land
Open to closed herbaceous vegetation
on temporarily flooded
Open to closed herbaceous vegetation
Irrigated land / Cropland
Clouds
Tana River-Waterbodies
Urban and Rural Settements
Open trees on temporarily flooded land
Trees and shrubs savannah
Very open trees (40-15% crown cover)
Open trees (65-40% crown cover)
Closed trees
Legenda) 1975 b) 2010
DDDAC Research team
16. Multipathogen surveys – Tana River, Kenya
0%
10%
20%
30%
40%
50%
Irrigation scheme Pastoral system Riverine
ecosystem
Brucellosis
Leptospirosis
Q fever
West Nile
Dengue
Seroprevalence
0%
2%
4%
6%
8%
10%
12%
2 3 4 5
Irrigated area
Pastoral area
Riverine ecosystem
Number of infections
Sero-prevalence
Sero-prevalences of selected
zoonoses by area
Multiple infections per subject
DDDAC Research team
17. Irrigation in the ASALs and vector-borne diseases
• Irrigation covers only 6% of the
sub-Saharan Africa, compared to
37% of Asia and 17% of Latin
America
• Kenya, Tanzania and Zambia –
greatest potential to expand
irrigation; each offering 100 – 200
thousand ha [WB Report, 2008]
• Implications on VBDs:
- Standing water - breeding
sites
- Target sites have very high
temperatures
- Pests – rats, birds,
- Wildlife
Effect of climate variables on mosquito
parameters – malaria model
18. Solutions – One Health approach
Control zoonoses in animal hosts “One Health”
– Median benefit to cost ratio is 4:1
Timely response to outbreaks can reduce 90% costs
Capacities to detect zoonoses
18
19. Solutions: Food safety in developing countries
• Branding & certification of milk
vendors in Kenya: led to improved
milk safety & saved economy $33
million
• Training Nigerian butchers led to
20% more meat samples meeting
standards. It cost $9 per butcher
but resulted in savings $780/per
butcher per year from reduced
cost of illness among consumers
20. Solutions: Innovations, incentives, capacities and
institutions for managing zoonotic diseases
• Develop and test technologies
Novel lateral flow assays for cysticercosis
21. Vaccines save lives of animals that both
increase food security and reduce poverty
Solutions:
ILVAC – a global vaccine initiative
An body technologies
Vaccine technologies
Cellular technologies
Diagnos c technologies
Genomic technologies
Contagiousbovine
pleuropneumonia
EastCoastfever
Africanswinefever
Consor a for research & product development and capacity development
Private sector
GALVmed
CRPs
NARS
Inter-gov
agencies
Improved vaccines and
diagnos c tools
Pestedespesruminants
RiValleyfever
Infec ous disease
research: basic & applied
ILVAC – a vaccine pla orm
23. Livestock and ecosystem health
Livestock are a source of greenhouse gases but
improving production efficiencies is key to reducing their
C footprints
Livestock feed can compete with staple crops and
biofuels for water and other natural resources but
– Pastures can help store carbon
– Animals in smallholder systems consume crop wastes and
natural pasture, not grain
Manure can pollute land and water but is an important
source of organic matter for soil fertility
24. Addressing GHG inefficiencies in the
developing world is an opportunity
Herrero et al 2013
GHG per kg of animal protein produced
25. Developing countries can mitigate GHG emissions
without moving to industrial grain-fed systems:
e.g., through improved efficiencies
(e.g., better feeds and feeding systems)
Feed opportunities
26. A global water crisis
2 billion people
lack access
Demand is growing;
freshwater is getting
scarcer
70% of total
freshwater use is for
agriculture,
of which 31%
is for livestock
27. Water for feed
30% reduction in water
needed for 1 litre of milk
by improving sorghum
stalk digestibility by 5%
28. Key messages
1
FOOD SECURITY
A key role for
developing
countries
3 HEALTHY PEOPLE
Human health is
influenced by
diseases endemic
in and emerging
from animals
2 HEALTHY ANIMALS
Food security
depends on
better animal health
4 HEALTHY
ECOSYSTEMS
Agriculture
impacts ecosystem
health
29. Key messages
1
FOOD SECURITY
A key role for
developing
countries
3 HEALTHY PEOPLE
Human health is
influenced by
diseases endemic
in and emerging
from animals
2 HEALTHY ANIMALS
Food security
depends on
better animal health
4 HEALTHY
ECOSYSTEMS
Agriculture
impacts ecosystem
health
31. The presentation has a Creative Commons licence. You are free to re-use or distribute this work, provided credit is
given to ILRI.
Better lives through livestock
ilri.org