Sketchy Micro: Flavivirus Group

Question 1

What kind of virus are Flaviviruses?

Answer 1

ssRNA, positive-sense, enveloped

Think of the daytime seen with orange colors and the robe-wearing guys near the Nile.

Question 2

True or false: Flaviviruses are segmented.

Answer 2

False. Think of the single, unbent straw coming out of the HepC juice boxes.

Question 3

List the Flaviviruses.

Answer 3

• Hepatitis C (like the FLAVored juice HepC being sold)
• Dengue fever (like the dingy boat)
• Yellow fever (water buffalo)

Question 4

Dengue virus is transmitted by _____________.

Answer 4

mosquitoes (specifically Aedes Egypti)

Question 5

Dengue virus causes ____________ fever.

Answer 5

break-bone (because it infects the bone marrow)

Question 6

What is the presentation of break-bone fever?

Answer 6

Thrombocytopenia and renal failure

Think of the kidney-shaped raft with the crossed red and blue tassels.

Question 7

What are the symptoms of yellow fever?

Answer 7

Jaundice (yellow buffalo)
Back pain (buffalo hump)
Fever (from the name, duh)
Bloody stool (the red stool that the guy’s standing on near the buffalo)

Question 8

Which of the Flaviviruses has a vaccine?

Answer 8

Yellow fever (typically just used in travelers)

Question 9

What is the reservoir for West Nile virus?

Answer 9

Birds (and it’s carried by mosquitoes)

Think of the swan in the Nile.

Question 10

West Nile virus can cause what symptoms?

Answer 10

Seizure (flapping wings)
Meningitis (neck brace on swan)
Encephalitis (red flaps on swans’ heads)
Flaccid paralysis (floppy swan neck)