3. Dengue is a Disease or fever
which is transmitted by
Mosquito (Aedes aegypti).
Also known as Backbone
Fever.
It results in the acute febrile
illness known as Dengue
Fever (DF)
It may also cause the life-
threatening Dengue
Haemorrhagic Fever (DHF) or
Dengue Shock Syndrome
(DSS)
5. •The Aedes aegypti eggs last
for 2-7 days and hatch when
submerged in water
•The hatched larvae feed on
microscopic organisms in
water and last for 4 days
•The larvae enter the pupae
stage where they don’t feed
and develop into adult after 2
days
•The adult mosquito lays eggs
three days after biting and
taking in blood and the cycle
starts again
6. Only the female Aedes mosquitoes bite and
take in blood to produce and develop eggs
The mosquito becomes infective 7 days after
it has bitten a person carrying the virus
Peak biting is at dawn and dusk
The average life span of a mosquito in
general is 2 weeks
The mosquito can lay eggs three times in its
lifetime (approx. 100 eggs each time)
7. Type 1Virus
Type 2Virus
Type 3Virus
Type 4Virus
These viruses vary genetically based on
different geographic locations
8. Chills
Headache
Low backache
Rashes
High temperature
Low heart rate and
low BP
Pain in joints
9. The mosquito is attracted by the body odors,
CO2 and heat emitted from animals or humans
Aedes are day-biters, most active during dawn
and dusk.
The female Aedes mosquito searches for
suitable places to lay their eggs.
10. Flower Pots Collar of the toilet bowl
Road side drain
Canvas sheets Air-con tray
11. •Dengue has emerged radically
throughout the world in the last
century.
•Dengue was considered a rural
disease before 1960. But now it is
considered a potential threat in
several countries
•The tropical and sub-tropical
countries of the globe are at risk of
Dengue transmission
12. Change water in vases/ bowls every other day.
Checking landscape structures for any water
retention & mosquito breeding regularly.
Wearing shoes, socks, long pants, long
sleeved shirt.
Using mosquito repellents
▪ Mosquito Coils
▪ Mosquito nets
