The enemy

The Aedes mosquito

Why?

It transmits• Dengue fever – deadly killer of mankind particularly children• Chikungunya - a crippling fever

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”

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

Aedes Farms

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

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

Natural Aedes farms

• Tree holes• Rock holes• Leaf axils

Man made Aedes farms

Water storage tank or cisterns

Breeding in uncovered water tank

Generous mind to Aedes

Cement water container

Water containers

Water storage drum

Tyres every where

Perfect Home for the enemy?

Enemy home everywhere

Inviting the enemy

Concrete mixer

Floor mat- safe home for the enemy

Roof gutters

The forty two containers

Unwilling to dispose

Aedes in animal water container in rural areas

All in one place

Mini homes for the enemy

Sweet home for the enemy

Opening the door for the enemy

Devil safe behind the God

What a devotion !!!

Coconut shells

Clean water for the enemy

Clean water for the enemy

Natural Aedes farms

Tree holes

Tree hole harbouring Aedes

Plantain leaf axil

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

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

Population explosionUrbanizationFaulty housingInadequate water supplyWide use of non-biodegradable materialsImproper disposal of solid wastes

FACTORS FAVOURING AEDES BREEDING

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

Environmental control

Simpler Solutions

Problem to solution

Washing with bleaching powder or ash and a brush

Discarding the water by tilting the container

War waged by children

Trained eyes searching for the enemy

Accepts the problem: Thinks deeply to find solution

Eureka

Source Reduction By NSS Students

Potable water sources are covered with cloth.

Used tyres collection campaign

Determined to win the war

Moved out for recycling/destruction

Young minds are trained to identify the enemy

Demonstration of larval breeding sources

School children as health messengers

Biological control

Larvivorous fish - Guppy, GambusiaBiolarvicides -B. thrungiensis

Chemical control

Larvicide -Temephos 5 ml/10 liter

Adulticide-Pyrethrum extract

2%,Technical Malathion, Synthetic

pyrethroid (Deltamethrin and

Cyfluthrin)

Fogging as an emergency operation to knock down adult mosquitoes

Fogging into residences infested with the enemy

Fogging in the streets

Fogging in the public places

Together we can bring change

Thank You