Dengu Awareness Month Lecture 2006

8/6/2019 Dengu Awareness Month Lecture 2006

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Dengue and the

Aedes Aedes



What is dengue?

� Dengue is a viral disease

transmitted by a mosquito called

Aedes eagypti & Aedesalbopictus

� it is common during rainy season.



MOSQUITO VECTORS

Aedes



W hat is the role of Aedes Mosquito in Humans?

� A mosquito that carry

the dengue virus

� It bites humans and

transmits dengue

� Increases in number

during rainy season.

Dengue VirusDengue Virus

Aedes Aedes mosquitomosquito



W ho are prone to Aedes bite?

� anybody can be bittenby the Aedes mosquito² young or old, male or

female, healthy orunhealthy.

� however, infants &school children are

mostly affected withdengue; generally 0²9

year old age group &School children.



What are the characteristics of a Dengue

mosquito? small, black & white insects

� w/ stripes on its legs, body & back , thus called the ´Tigerµ mosquito;

measures about 5mm in size

feeding

� female takes blood meal

� male feeds on plant juices &nectars

generally day biters

� bites all day long but prefers tobite 1-2 hours after sunrise &before sunset.



W hat are the characteristics of a

Dengue mosquito? ² Life Cycle � can fly from 50 ² 300m to look for

blood meal or breeding site

� 1 female lays about 60 ² 100 eggsper batch & lays about 3 ² 4batches of eggs in its lifetime

� prefers dark color for oviposition;breeds in artificial or naturalcontainers; lays only in cleanstagnant water

� Ae. aegypti prefers to rest cool

shaded places, dark corners, closets& drawers; Ae. albopictus ² restsoutdoor, among shrubs & trees.

� female Aedes mosquito feeds every 2 ² 3 days & it can survive up 30days.



What ar e the

common

br eedi ng

si t es of

Aedes

mosqui toes?



W hy are Dengue Epidemics increasing?

� increasing urban population

� expanding mosquito breedingsites

� unreliable water supply

� traditional water storagepractices

� poor garbage collection

� changing lifestyle

� rapid transportation

� movement of infectedhumans

� spread of dengue mosquitoes

� other related factors



How can Dengue be prevented?

� eliminate mosquito breeding sites(source reduction)

� cover all water containers toavoid entry of mosquitoes

� change water of flower vases

& scrub side of containers 1x aweek

� dispose of garbage properly &remove rubbish aroundpremises that can collect rainwater

� inspect & clean roof gutters

� stockpiling of discarded tiresunder the shade & place acover on top.



How can Dengue be prevented?

� prevent mosquito bites

� install screens on windows & doors

� use protective clothing or repellents

� use mosquito nets for infants or adults while sleeping

at daytime� isolate the person sick w/ Dengue in a screened room

or by using a mosquito net.



W hat must the community leaders do to prevent Dengue?

�Organize a functional Dengue Team in the

barangays ex. Dengue Task Force, Dengue Brigade,

Dengue Watch Team in all barangays

�Implement anti-dengue activities ex. 4 O·clock

Habit, Operation Linis Kontra Kiti-kiti, Healthy Places

�Conduct health education campaigns

�Conduct inspection of the premises to eliminate

mosquito breeding sites

�Create & enforce ordinances to establish & maintaina ´dengue-freeµ community.



Basic Information : Key Messages

� Dengue is a dangerous disease; it can affect anyone but itis preventable.

� There is no drug or vaccine for Dengue. Once infected, thekey to survival is early diagnosis & prompt management of cases.

� Dengue suspects should be brought to the nearest healthfacility. Do not self-medicate.

� Dengue mosquitoes breed in the artificial & naturalcontainers found in our surroundings.

� Elimination of the breeding site is the cornerstone formosquito control.

� Personal protection is also necessary to prevent mosquitobites.

� The occurrence of Dengue can be prevented throughcollaborative efforts of various sectors of society includingthe community.



Have a nice day!!!

Dengu Awareness Month Lecture 2006

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