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► Med - Pathology > Emerging Viruses > Flashcards

Emerging Viruses Flashcards

1
Q

Why aren’t all viremic viruses transmitted by mosquitoes?

A

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

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2
Q

How do mosquitoes transmit viruses?

A

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

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3
Q

What family is Yellow Fever virus?

A

Flavivirus

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4
Q

Is there a vaccine for Yellow Fever?

A

Yes - live-attenuated

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5
Q

What is the reservoir for Yellow Fever?

A

Monkeys

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6
Q

What is the reservoir for Dengue Virus?

A

Monkeys

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7
Q

What disease has antibody dependent enhancement?

A

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

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8
Q

What family is West Nile Virus?

A

Flavivirus

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9
Q

What is the reservoir of West Nile Virus?

A

Marsh Birds

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10
Q

Who gets the most severe disease in West Nile Virus?

A

Older people

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11
Q

What is Zika virus associated with?

A

Microcephaly in newborns

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12
Q

What is the most common course of Zika virus infection?

A

Asymptomatic Infection

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13
Q

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

A

West Nile Virus

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14
Q

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

A

St. Louis Encephalitis Virus

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15
Q

What family is Chikungunya virus?

A

Togavirus

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16
Q

Why are tire yards a health risk?

A

They can have standing water - mosquito breeding ground

17
Q

How are bunyaviruses transmitted?

A

Mosquitoes

18
Q

What family is Colorado Tick Virus from?

A

Reovirus (Rotavirus is another virus in this family)

19
Q

What family is Omsk Virus?

A

Flavivirus

20
Q

What family is Ebola virus?

A

Filovirus

21
Q

What is the pathogenesis of Ebola?

A

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

22
Q

What is thought to be the reservoir of Ebola?

A

Bats

23
Q

What family is SARS?

A

Coronavirus

24
Q

How is SARS spread?

A

Respiratory

25
Q

What is the typical presentation of SARS?

A

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

26
Q

What is the reservoir of MERS?

A

Bats - Camels are the source for transmission to humans

27
Q

Is Hantavirus transmissible human to human?

A

No

► Med - Pathology (203 decks)

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