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Dengue Fever
(Pronounced as Dhen Gey)
Facts we all need to know
Alternative Names
Onyong- Nyang Fever
West Nile Fever
Break Bone Fever
Dengue like Disease
Inter play of three factors
WE

Interaction

The Virus

The Mosquito
The Virus

Dengue Virus
The Dengue Virus
Four types (flavours)
Type 1 to 4 (named very cleverly)
Transmitted by mosquito –

Indian national airliner for most germs!
Dengue Virus
Electron Micrograms
The Aircraft for Dengue
Difficult name to pronounce?
We have to ask its parents (Zoologists)

Aedes aegypti
(Infected Female Mosquito)
mostly females are
dangerous anyway – joking!
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
The Aircraft (Aedes aegypti)
This special mosquito

Transmits
Many
Dangerous
illnesses
See our greatness!

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
Dengue Transmission Cycle
Dengue colourful features!

Clinical Features
Dengue Presentations
Like any other viral fever- not clear cut
Dengue Fever with Muscle pains
this is classical presentation in 90%
cases
Dengue Fever with bleeding in 7%
Dengue – the dangerous form in 3%
Bleeding from where?
Bleeding into skin
From Gums
From Nose
Into our food passages
Blood in urine
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
Skin bleeds
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
Bleeding into the eye
Large bleed into skin
Bleeding spots in skin
Normal

Dengue
Rare types of Dengue
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 Aspirin and 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
Sever 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.

2.
3.

Do not allow empty vessels,
coconut shells, plastic containers,
flower pots, tires etc to collect rain
water in them
Frequently (once in 2-3 days)
empty all water storage containers
Cover your over tanks to prevent
mosquitoes breeding in fresh water
How to prevent mosquito bites?
Screen your homes with mosquito
screens like Netlon Wear full clothing – long sleeves
Apply mosquito repellents like Odomos
Keep Dengue fever patient
under mosquito net
True community participation is key
We need to learn

Each person is a Book !
Each Day is a Learning Opportunity!!
Learning has More Relevance
today than ever !!!
Reach Yours Sincerely @
Dr.SARMA RVSN
Voice : +91-4116-2309226, 260593
Mobile : +91- 93805 21221
E-mail : sarma.rvsn@gmail.com
Web site : http://www.drsarma.in
Snail mail :
3, Jayanagar, Tiruvallur
Tamilnadu, INDIA
Pin : 602 001
Thank You !

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Dengu fever simple transimision

  • 1. Dengue Fever (Pronounced as Dhen Gey) Facts we all need to know
  • 2. Alternative Names Onyong- Nyang Fever West Nile Fever Break Bone Fever Dengue like Disease
  • 3. Inter play of three factors WE Interaction The Virus The Mosquito
  • 5. The Dengue Virus Four types (flavours) Type 1 to 4 (named very cleverly) Transmitted by mosquito – Indian national airliner for most germs!
  • 7. The Aircraft for Dengue Difficult name to pronounce? We have to ask its parents (Zoologists) Aedes aegypti (Infected Female Mosquito) mostly females are dangerous anyway – joking!
  • 8. 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
  • 11. See our greatness! Prevalent from centuries Highly prevalent now
  • 12. 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
  • 15. Dengue Presentations Like any other viral fever- not clear cut Dengue Fever with Muscle pains this is classical presentation in 90% cases Dengue Fever with bleeding in 7% Dengue – the dangerous form in 3%
  • 16. Bleeding from where? Bleeding into skin From Gums From Nose Into our food passages Blood in urine
  • 17. 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!
  • 18. What is the end result? Complete recovery is the rule Severe weakness many persist for many days after the fever leaves us
  • 20. 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
  • 23. Bleeding spots in skin Normal Dengue
  • 24. Rare types of Dengue Brain fever Liver damage Heart damage Severe bleeding into stomach
  • 25. 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
  • 26. Special Test (ELISA) ELISA Plate IgM-capture ELISA
  • 27. Treatment of Dengue Supportive measures – Mosquito screen Avoid Aspirin and 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
  • 28. Child with severe form of Dengue Oxygen IV Fluids Special Care See the tubes every where Frightening, isn’t it?
  • 29. Common Misconceptions Severe Dengue is only a childhood illness – No, All ages may be involved Sever form is a problem of poor families – No, The effluent do get very sick
  • 30. Can we protect ourselves? There is no vaccine available as yet But we can prevent the disease by preventing ourselves from mosquito bite
  • 31. Mosquito Control How to prevent mosquito spread? 1. 2. 3. Do not allow empty vessels, coconut shells, plastic containers, flower pots, tires etc to collect rain water in them Frequently (once in 2-3 days) empty all water storage containers Cover your over tanks to prevent mosquitoes breeding in fresh water
  • 32. How to prevent mosquito bites? Screen your homes with mosquito screens like Netlon Wear full clothing – long sleeves Apply mosquito repellents like Odomos Keep Dengue fever patient under mosquito net True community participation is key
  • 33. We need to learn Each person is a Book ! Each Day is a Learning Opportunity!! Learning has More Relevance today than ever !!!
  • 34. Reach Yours Sincerely @ Dr.SARMA RVSN Voice : +91-4116-2309226, 260593 Mobile : +91- 93805 21221 E-mail : sarma.rvsn@gmail.com Web site : http://www.drsarma.in Snail mail : 3, Jayanagar, Tiruvallur Tamilnadu, INDIA Pin : 602 001