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CONTROL STRATEGY OF FMD IN LIBYA AND POST-VACCINATION MONITORING
Dr. Ibrahim EldaghayesFaculty of Veterinary Medicine
University of TripoliTripoli, Libya
Abdunaser Dayhum; Abdulwahab Kammon; Monier Sharif; Giancarlo Ferrari;
Keith Sumption; Donald King; Santina Grazioli and Emiliana Brocchi
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Libya
Libya
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History of FMD in Libya:
Serotype Years
FMDV-O: 1959, 1962, 1967-1968, 1972, 1981-1983, 1988-1989, 1994, 2010-2013
FMDV-A: 1979, 2009
FMDV-C: 0000
FMDV-Asia 1: 0000
FMDV-SAT 1: 0000
FMDV-SAT 2: 2003, 2012
FMDV-SAT 3: 0000
Source: http://www.wrlfmd.org/
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Genotyping
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EuFMD Real-Time Training Course in Kenya (Jan 2013)
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Real-Time Training Course Lectures in Libya
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FMD Scientific DayTripoli, 30/03/2014
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Rapid Response Teams (RRT)
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FMD lateral-flow devices: received from EuFMD
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The Progressive Control Pathway for FMD control
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• Progressive Control Pathway (PCP) and Risk Based Strategic Plan implementation:
Component 2.3 of EuFMD workplan (REMESA): Assist national FMD risk management as part of the REMESA action plan.
Week Date
Week 1 26-30/01/2014
Week 2 23-27/03/2014
Week 3 Postponed due to security reasons
Week 4 Postponed due to security reasons
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Mass Vaccination Campaign in LibyaSheep, Goats and Cattle: A & O
• Merial Vaccine• Strains: O Manisa – O 3039 ; A Iran 05; (SAT-2 in 2012)
• Killed and purified vaccine• 250 Vaccination Teams• Once per year (2012 & 2013)• 2014:
• Small ruminant once/year • Cattle twice/year
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Vaccine Matching
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Agreement between the Libyan government and IZSLER, Italy 2012
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Component 1 investigations in FMD suspected outbreaks.
Component 2 focused on the immune response of vaccinated animals.
Component 3 focused on serology as a mean to investigate on the level of FMD virus circulation (anti-NSP antibodies) and on the serotypes present (anti-SP serotype-specific antibodies).
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Component 1 (FMD suspected outbreaks – Clinical cases)
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COMPONENT 2 (immune response in vaccinated animals)
• This component has addressed the immune response of vaccinated animals.
• The outcome to be measured will be the level of antibodies before the vaccine is injected and the level of antibodies after 30 days from the date of vaccination.
• The animals (Cattle and small ruminants) selected for sampling were ear-tagged and blood samples were collected at the day of vaccination and repeated after 30 days.
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Component 2: Immune response in vaccinated animals
Sampling and testing criteria
Anti-NSP Ab and titration of SP Abs (serotypes O, A, SAT2) before and 30 days PV
For each species (goat, sheep, cattle): 150 animals, 6-12 month-old, ear-tagged
Possibly, 10 different owners for each species (15 animals for each owner)
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Immune response to vaccine in small ruminants farms
7 FARMS
Vaccine: type O+A
≈ 30 animals/farm
6 farms NSP-NEG
1 farm NSP-POS
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Immune response to vaccine in small ruminants
6 FARMS NSP neg
Vaccine: type O+A
≈ 30 animals/farm
SEROCONVERSION 30 DPV
Serotype O
135/164 (82%)
Serotype A
152/164 (93%)
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Immune response to vaccine in 1 cattle farm
Seroconversion 30 DPV
O A SAT 2
N + 30/30 30/30 29/30
% + 100 % 100 % 97 %
Vaccine: types O+A+SAT230 cattle, NSP neg
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Current workJan 2015 – Jan 2016
• Cattle: Collection of serum from unvaccinated animals at the time of injection of the vaccine (time 0) and tag the animals from which the sample has been collected (n=99).
• Collect serum after 2, 4 and 6 months.
• Booster vaccination at 6 months for 70 animals.
• Collect serum again after 2, 4 and 6 months.
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EuFMD Team (March 2015)
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Thanks to:• EuFMD
• IZSLER, Brescia and Ministry of Health, Italian Government
• FAO
• OIE
• REMESA
• Pirbright Lab
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