Dengu fever final

Topic: Topic: Dengue Fever

Facts we all need to know

School Name : Ramakrishna Mission Vidyalaya, Viveknagar, Tripura, West

Affiliated to CBSE, New Delhi

Digital eContent Submitted by:Name of the Teacher : Mr. Uday Pal(PGT)Year: 2014-15Email- [email protected]

Alternative Names

Onyong- Nyang Fever

West Nile Fever

Break Bone Fever

Dengue like Disease

Inter play of three factors

WE

The Virus The Mosquito

Interaction

The Virus

Dengue Virus

The Dengue Virus

Four types

Type 1 to 4

Transmitted by mosquito –

Indian national airliner for most

germs!

Dengue Virus

Electron Micrograms

The Aircraft for Dengue

Aedes aegypti(Infected Female Mosquito)

Watch out ! This Mosquito

Day biting – normally catches us unaware

Loves / lives in fresh water in homes

Lays eggs preferentially in jars, discarded containers, coconut

shells, old tires etc.

Year round breeding

Tropical regions like our mother India are its favorite zones.

It is an urban mosquito

Geographical distribution

Prevalent from centuries Highly prevalent now

Dengue Fever

Dengue viruses – 4 flavours cause it

It is transmitted by a mosquito- the Aedes aegypti

It is generally an animal virus

Man is accidentally infected

Other vertebrates are the reservoirs

Types of dengue!

Classical form: Dengue Fever with Muscle pains this is classical presentation in 90% cases.

Bleeding form: Dengue Fever with bleeding in 7% cases.

Dengue shock: In 3% cases.

What do we experience ?

2–7 days after the mosquito had its dinner on us we may develop

Sudden onset of fever, chills, headache Back pain with severe muscle and joint pains Pain behind the eyes and on moving the eyes Nick name - Break bone fever- pains so severe Red patches or spots on the skin Mild nose bleeds

This is the ordinary classical Non dangerous form!

What is the end result?

Complete recovery is the rule

Severe weakness many persist for many days after the

fever leaves us

Dengue – The bleeding form

Blood vessels are affected There is severe oozing into tissues Bleeding into all possible parts of body Blood clotting mechanism is disrupted Blood pressure falls and many end in collapse and death In the best centers 5% of this type of Dengue will reach their

forefathers

Symptoms of bleeding form

Bleeding into skin From Gums From Nose Into our food passages Blood in urine

Skin bleeds

Bleeding into the eye

Large bleed into skin

Bleeding spots in skin

Dengue

Normal

Rare types of Dengue ( dengue shock)

Brain fever Liver damage Heart damage Severe bleeding into

stomach

What are the tests needed?

Routine blood test

Tests to check the clotting process

Special tests to identify the Dengue or its foot marks in

our blood

Urine to check protein leak

Special Test (ELISA)

ELISA Plate IgM-capture ELISA

Treatment of Dengue

Supportive measures – Mosquito screen

Avoid pain killers

Steroids should not be used

Plenty of water and salt are required

Children below 12 require careful watch

for dangerous form

No antibiotics are of proven value

Child with severe form of Dengue

Oxygen

IV Fluids

Special Care

See the tubes every where

Frightening, isn’t it?

Common Misconceptions

Severe Dengue is only a childhood illness –

No, All ages may be involved

Severe form is a problem of poor families – No, The effluent

do get very sick

Can we protect ourselves?

There is no vaccine available as yet

But we can prevent the disease by preventing ourselves from

mosquito bite

Mosquito Control

How to prevent mosquito spread?

1. Do not allow empty vessels, coconut shells,

plastic containers, flower pots, tires etc to collect

rain water in them

2. Frequently (once in 2-3 days) empty all water

storage containers

3. Cover your over tanks to prevent mosquitoes

breeding in fresh water

How to prevent mosquito bites?

Screen your homes with mosquito screens

Wear full clothing – long sleeves

Apply mosquito repellents

Keep Dengue fever patient under mosquito net

True community participation is key

Thank You !

Dengu fever final

Health & Medicine

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