Viral Disease of Lower Resp System-Influenza

Question 1

Influenza Symptoms

Answer 1

Chills, fever, headache, and muscle aches

Question 2

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

Answer 2

Influenza A

Question 3

Two kinds of glycoprotein SPIKES embedded in Influenza A

Answer 3

Hemagglutinin (HA) and Neuraminidase (NA)

Question 4

Spikes used for attachment to host cells

Answer 4

HA! Hemagglutinin (16 subtypes)

Question 5

Spikes used to release virus from cell

Answer 5

NA! Neuraminidase ~9 Subtypes~

Question 6

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

Answer 6

antigenic shift

Question 7

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

Answer 7

antigenic drift

Question 8

Antigenic shifts in influenza A caused by

Answer 8

changes in HA & NA spikes (proteins)

Question 9

Antigenic drifts in influenza likely caused by

Answer 9

point mutations in genes encoding for HA/ NA spikes