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Flashcards in Emerging Viruses Deck (27):
1

Why aren't all viremic viruses transmitted by mosquitoes?

Not all viruses can replicate in the stomach of the mosquito - most are destroyed.

2

How do mosquitoes transmit viruses?

Mosquito injects saliva containing virus particles and anti-coagulant, and then sucks blood

3

What family is Yellow Fever virus?

Flavivirus

4

Is there a vaccine for Yellow Fever?

Yes - live-attenuated

5

What is the reservoir for Yellow Fever?

Monkeys

6

What is the reservoir for Dengue Virus?

Monkeys

7

What disease has antibody dependent enhancement?

Dengue Fever - immunization with type-2 predisposes people to more severe disease when infected with another type

8

What family is West Nile Virus?

Flavivirus

9

What is the reservoir of West Nile Virus?

Marsh Birds

10

Who gets the most severe disease in West Nile Virus?

Older people

11

What is Zika virus associated with?

Microcephaly in newborns

12

What is the most common course of Zika virus infection?

Asymptomatic Infection

13

What is the most common cause of epidemic encephalitis in the US?

West Nile Virus

14

What is the SECOND most common cause of epidemic encephalitis in the US?

St. Louis Encephalitis Virus

15

What family is Chikungunya virus?

Togavirus

16

Why are tire yards a health risk?

They can have standing water - mosquito breeding ground

17

How are bunyaviruses transmitted?

Mosquitoes

18

What family is Colorado Tick Virus from?

Reovirus (Rotavirus is another virus in this family)

19

What family is Omsk Virus?

Flavivirus

20

What family is Ebola virus?

Filovirus

21

What is the pathogenesis of Ebola?

Viral replication in multiple organs that leads to lysis of cells and hemorrhagic fever

22

What is thought to be the reservoir of Ebola?

Bats

23

What family is SARS?

Coronavirus

24

How is SARS spread?

Respiratory

25

What is the typical presentation of SARS?

Almost always causes a fever - can have respiratory symptoms as well

26

What is the reservoir of MERS?

Bats - Camels are the source for transmission to humans

27

Is Hantavirus transmissible human to human?

No

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