Viral Disease of Lower Resp System-Influenza Flashcards

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1
Q

Influenza Symptoms

A

Chills, fever, headache, and muscle aches

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2
Q

enveloped single stranded RNA virus, w/ 8 RNA segments which contain 1 or 2 genes

A

Influenza A

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3
Q

Two kinds of glycoprotein SPIKES embedded in Influenza A

A

Hemagglutinin (HA) and Neuraminidase (NA)

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4
Q

Spikes used for attachment to host cells

A

HA! Hemagglutinin (16 subtypes)

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5
Q

Spikes used to release virus from cell

A

NA! Neuraminidase ~9 Subtypes~

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6
Q

major changes that result from reassortment different strains of a virus or different viruses

A

antigenic shift

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7
Q

Minor changes that occur naturally in influenza virus antigens as a result of mutation

A

antigenic drift

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8
Q

Antigenic shifts in influenza A caused by

A

changes in HA & NA spikes (proteins)

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9
Q

Antigenic drifts in influenza likely caused by

A

point mutations in genes encoding for HA/ NA spikes

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