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7/29/2019 PRESENTATION: Community-Based Dengue Vector Control by Dr Gerard Servais
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Community-Based DengueVector Control
Presentation byGerard Servais, Health Specialist
12 September 2013
Disclaimer: The views expressed in this paper/presentation do not necessarily reflect the views or
policies of the Asian Development Bank (ADB), or its Board of Governors, or the governments they
represent. ADB does not guarantee the accuracy of the data included in this paper and accepts no
responsibility for any consequence of their use. Terminology used may not necessarily be consistent
with ADB official terms.
7/29/2019 PRESENTATION: Community-Based Dengue Vector Control by Dr Gerard Servais
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Short Update on Dengue
By 5 September 2013 , 51,000 denguecases in Cambodia and Lao PDR;15,000 in Singapore; 96,000 inPhilippines; 18,000 in Malaysia.
Key determinants of dengue emergencedeterminants are (i) urbanization ; (ii)
population mobility; (iii) climate change.
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ADB-WPRO Intervention.
The ADB funded TA Regional PublicGoods for Health: Combating Dengue in
ASEAN has tested a community basedvector control intervention in Lao PDRand Cambodia, in collaboration with
World Health Organization WesternPacific Region.
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Dengue Transmission and
Mosquito Lifecycle Dengue transmission Mosquito lifecycle
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Mosquito Breeding Sites
Discarded trash (tires, bottles, plastic packaging, )
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Mosquito Breeding Sites
Water containers
7/29/2019 PRESENTATION: Community-Based Dengue Vector Control by Dr Gerard Servais
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Pilot Intervention Discarding or turning over unused containers.
Disposing discarded trash.
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Pilot Intervention
Introducing one or two fishes in every watercontainer. The fish will eat the mosquito larvaeand feed on other microorganism in the
container.
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Pilot Intervention
Raising awareness in the community, targetingon health workers, school children andteachers, womens organizations and religious
groups.
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Pilot Intervention
Identify ponds or tanks for guppy fishreproduction.
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Methodology of the Study
Intervention sites: 50 villages in Cambodia andLao PDR (population 57,000)
Control sites: 17 villages (population: 22,000) Entomology survey in June 2010 before the
start of the study, and 5 consequent datacollection until September 2011.
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Results: Percentage of watercontainers with at least one
guppy fish
0
10
20
30
40
50
60
70
80
90
100
Percentage
Drum
Cement tanks
Water jars
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Result: Percentage ofWater Containers with
Mosquito Larvae
0
10
20
30
4
0
50
June 2010 Sept 2010 Dec 2010 Mar 2011 June 2011 Sept 2011
Intervention Control
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Conclusions
Simple, sustainable, and community-based methods contribute to thedengue vector control.
Compared to other methods (insectidesor larvicides), biological methods arecheaper and environment-friendly.
It is easy to obtain community buy-infor the guppy fishes.
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Conclusions
However, there no magic bullet anddifferent methods must be used in
parallel.
Scaling up vector control measures iscostly and requires follow up.
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Special thank to all who
contributed to the study:The community of the intervention and control villages,
Bounpone Sidavong, Dr. Bouasy Hongvanthong, Tienkgham
Pongvongsa (Lao PDR),Char Meng Chour, Ngan Chantha, To Setha (Cambodia),
Carol Beaver, Kevin Palmer, Perry Morrisson,Eva Christophel, John Ehrenberg, Chang Moh Seng, Joshua Nealon
(WPRO) ,
Linda Loyd,Barbara Lochmann, Vincent de Wit, Patricia Moser (ADB)
http://www.adb.org/sites/default/files/pub/2013/community-based-dengue-vector-control.pdf
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