Liberia Field Epidemiology Training Programme (LFETP)Liberia Field Epidemiology Training Programme (LFETP)
Miatta Kullie 1, 2, M. Amo-Addae2, T. Nagbe1, S.J.N. McNabb3, G.N. Farhat3, P.
Adewuyi2, J. Frimpong2, H. Kazoora4
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Measles Outbreak, Duazon
Communities, Mamba Kaba District,
Margibi County, Liberia, 2015
1 Ministry of Health, Monrovia, Liberia2 Liberia Frontline FETP, Monrovia, Liberia3 Emory University, Atlanta, Georgia, USA4 AFENET, Kampala, Uganda
Liberia Field Epidemiology Training Programme (LFETP)
Outline of Presentation
Acknowledgement
Introduction
Objectives
Methods
Results
Conclusion
Pictures
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Liberia Field Epidemiology Training Programme (LFETP)
Acknowledgement
Margibi County Health Team
Liberia Ministry of Health
Emory University
CDC
AFENET
WHO
FETP Frontline Mentors
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Liberia Field Epidemiology Training Programme (LFETP)
Introduction 1/2 Measles
Viral disease, usually affects children aged 0 to 5
years
Spreads through droplet infection and direct
contact
Incubation period of about 7-14 days
Vaccine is given at 9 months of age in Liberia
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Liberia Field Epidemiology Training Programme (LFETP)
Introduction 2/2
26th of December 2015:
Suspected measles case from Duazon
community was reported to District
1st week January 2016:
Field investigation began
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Liberia Field Epidemiology Training Programme (LFETP)
Objectives
Confirm the outbreak
Describe the outbreak by person, place and time
Determine the source of the outbreak
Control the outbreak
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Liberia Field Epidemiology Training Programme (LFETP)
Methods 1/2
Duazon community,
Margibi County, Liberia
Population: 3,684
Active case search
Case definition
any persons in Duazon
community with fever,
rashes, red eyes,
coryza from Dec. 26,
2015 to February 14,
2016
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Liberia Field Epidemiology Training Programme (LFETP)
Methods 2/2
Line-listed cases
demographic data
signs and symptoms
Laboratory testing of blood samples for Measles
We conducted a descriptive analysis of the data
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Liberia Field Epidemiology Training Programme (LFETP)
Results 1/2
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Twenty-nine cases were line-listed
Fifteen (52%) were above 5years old
Fifteen (52%) were male
Median Age is 5years (Range: 6months-29years)
10 blood samples were positive for Measles 3 were vaccinated
7 were not vaccinated
Liberia Field Epidemiology Training Programme (LFETP)
Results 2/2
Vaccination Status of the 29 cases:
Vaccinated 4 (14%)
Unvaccinated 22 (76%)
Unknown 3 (10%)
Index case
29 year old male
No history of contact
No relevant travel history
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Liberia Field Epidemiology Training Programme (LFETP)
Epicurve of Measles Outbreak, Duazon Communities, Mamba
Kaba, Margibi County, Liberia, Dec. 26, 2015 Feb. 14, 2016
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2015 20160
2
4
6
8
10
12
14
48 49 50 51 52 53 1 2 3 4 5 6 7 8
Nu
mb
er
of
Cas
es
Week of Onset
confirmed cases
Suspected Cases
Intervention
Mass vaccination
began
Liberia Field Epidemiology Training Programme (LFETP)
Response
Surveillance was maintained
Cases were isolated and treated
Intensive three-month vaccination outreach
was conducted
Routine immunization was strengthened
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Liberia Field Epidemiology Training Programme (LFETP)
Conclusion 1/2
Confirmed Measles outbreak in the Duazon
Community
More than half of affected were aged >5years
Most affected were unvaccinated (at least
76%)
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Liberia Field Epidemiology Training Programme (LFETP)
Conclusion 2/2
Outbreak lasted 2months (Dec 2015 Feb
2016)
Source of the infection remains unknown
Outbreak was controlled by public education,
mass vaccination, treatment and isolation of
cases
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Liberia Field Epidemiology Training Programme (LFETP)
Action Pictures
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Miatta conducting an interviewInvestigation team preparation meeting
