Download - The enemy
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The enemy
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The Aedes mosquito
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Why?
It transmits• Dengue fever – deadly killer of mankind particularly children• Chikungunya - a crippling fever
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Characteristics of theAedes Mosquito
It bites during the day
It lays its eggs in clean, shady, stagnant water
One distinct physical feature – black and white strips on its body and legs-Hence called “Tiger Mosquitoes”
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Life Cycle of Aedes sp. Vector
EggEgg1.5 – 3 days1.5 – 3 days
LarvaLarva6 – 8 days 6 – 8 days
PupaPupa1.5 – 3 days1.5 – 3 days
AdultAdult21 days 21 days
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Aedes Farms
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Man made Aedes farms
• Water storage tank or cistern
• Drums• Flower vase filled with
water• Potted plants with
saucers• Roof gutters
• Discarded food and drink containers
• Used tyres• Discarded large
appliances• Discarded buckets• Rubber collection shells
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Man made Aedes farms
• Animal water container
• Air coolers• Water coolers• Discarded tins• Window gutters
• Tender cocunut shells• Plastic covers used for
covering fruits in the trees
• Air conditioners
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Natural Aedes farms
• Tree holes• Rock holes• Leaf axils
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Man made Aedes farms
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Water storage tank or cisterns
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Breeding in uncovered water tank
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Generous mind to Aedes
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Cement water container
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Water containers
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Water storage drum
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Tyres every where
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Perfect Home for the enemy?
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Enemy home everywhere
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Inviting the enemy
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Concrete mixer
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Floor mat- safe home for the enemy
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Roof gutters
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The forty two containers
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Unwilling to dispose
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Aedes in animal water container in rural areas
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All in one place
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Mini homes for the enemy
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Sweet home for the enemy
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Opening the door for the enemy
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Devil safe behind the God
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What a devotion !!!
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Coconut shells
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Clean water for the enemy
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Clean water for the enemy
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Natural Aedes farms
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Tree holes
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Tree hole harbouring Aedes
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Plantain leaf axil
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Eggs withstand desiccation for years
Flight range is mostly < ½ km
Day biting mosquito (Early morning and late afternoon)
Longevity - about 3 weeks
Vector Bionomics
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Ambient temperature for breeding 16°C to 40°C
Indoor - rests in dark and cool places
Out door - shady places
High humidity & High temperature enhance the vectorial capacity
VECTOR BIONOMICS
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Population explosionUrbanizationFaulty housingInadequate water supplyWide use of non-biodegradable materialsImproper disposal of solid wastes
FACTORS FAVOURING AEDES BREEDING
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Components of Aedes Control
• Advocacy, social mobilization and legislation• Colloboration within the health sector and
other sectors• Integrated approach to vector control• Evidence based decision making • Capacity building
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Environmental control
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Simpler Solutions
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Problem to solution
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Washing with bleaching powder or ash and a brush
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Discarding the water by tilting the container
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War waged by children
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Trained eyes searching for the enemy
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Accepts the problem: Thinks deeply to find solution
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Eureka
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Source Reduction By NSS Students
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Potable water sources are covered with cloth.
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Used tyres collection campaign
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Determined to win the war
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Moved out for recycling/destruction
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Young minds are trained to identify the enemy
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Demonstration of larval breeding sources
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School children as health messengers
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Biological control
Larvivorous fish - Guppy, GambusiaBiolarvicides -B. thrungiensis
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Chemical control
Larvicide -Temephos 5 ml/10 liter
Adulticide-Pyrethrum extract
2%,Technical Malathion, Synthetic
pyrethroid (Deltamethrin and
Cyfluthrin)
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Fogging as an emergency operation to knock down adult mosquitoes
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Fogging into residences infested with the enemy
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Fogging in the streets
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Fogging in the public places
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Together we can bring change
Thank You