[18] Arthropod-Borne Infections Flashcards
How many dengue serotypes are there?
4
This vector of dengue is more active outdoors and thrives in a wider range of habitats such as coconut husks and bamboo stumps
Aedes albopictus
This vector of dengue thrives in water-filled breeding sites and typically feeds and rests indoors
Aedes aegypti
What do you use for a Tourniquet test?
A sphygmomanometer cuff and not a tourniquet
How do you perform the tourniquet test?
What is a positive result?
- Inflate blood pressure cuff to a point between SBP and DBP for five minutes
- Count the total number of petechiae visible in a circle or a square with an area of 1 square inch
A positive result is more than 20 petechiae per square inch
How can you classify a patient as having non-severe dengue?
Patients improve after defervescence
How can you say that a patient is in the critical phase of dengue?
Plasma leakage
Dengue Warning Signs
- Bleeding
- Lethargy
- Abdominal Pain
- Pleural Effusion
- Ascites
- Liver Enlargement
- Persistent Vomiting
The shock of dengue does not last longer than?
24-48 hours
Describe the convalescent rash of Dengue
“Isles of white in the sea of Red”
“Herman’s Rash”
What antibodies should you test for a primary dengue infection?
IgM
What antibodies should you test for a secondary dengue infection?
IgG
Main difference between dengue fever and dengue hemorrhagic fever
No evidence of plasma leakage in dengue fever
Main problem of old WHO Classification 1997
The definitions are too rigid
Is dengue fever a milder case compared to dengue hemorrhagic fever?
Not always, this cannot be assumed
