Flaviviridae (Virus)

Question 1

What are the family characteristics of Flaviviridae?

Answer 1

Enveloped, icosahedral arbovirus.

Question 2

What are the diseases of medical importance caused by Flaviviridae? (5 diseases)

Answer 2

1. West Nile Encephalopathy Virus (SLE)
2. West Nile Encephalitis Virus (WNV)
3. Dengue Virus
4. Yellow Fever Virus (YFV)
5. Hepatitis C Virus (HCV)

Question 3

What are the hosts and vectors of SLE and WNV? What disease does it cause? How to prevent?

Answer 3

Mosquitoes are the vector, host is birds, disease is encephalitis, vector control is how you prevent disease.

Question 4

Which age group had the highest rate of mortality for WNV?

Answer 4

The Elderly, the rest are either asymptomatic or have west nile fever.

Question 5

What are the vectors for YFV and Dengue? The host?

Answer 5

Vector is mosquitoes, host is monkeys and humans.

Question 6

Diseases caused from Dengue fever?

Answer 6

1. First time, it is Break bone fever, rash, muscle and joint pain.
2. If endemic, you can get Dengue Hemorrhagic fever/shock, re-infection can result in hemorrhage and shock, primarily in children.

Question 7

Diseases caused by YFV?

Answer 7

Yellow Fever, Liver, Kidney, Heart and GI (black vomit damage).

Question 8

Prevention of YFV and Dengue Fever?

Answer 8

Vector control, however YFV has a live attenuated vaccine.

Question 9

What seems to cause the Dengue Hemorrhagic fever?

Answer 9

Immune reaction to Dengue.