Lesson 5 (Part 1)

Question 1

When can influenza affect you?

Answer 1

Anytime of the year

- most common in the fall/winter months

Question 2

Why can influenza effect you anytime of the year?

Answer 2

Because someone could be travelling from a winter place to a summer place and spread it

Question 3

What are the major types of flues? (3)

Answer 3

1. Spanish flu
2. Asian flu
   - bird flu
3. Hong Kong flu

Question 4

What type of strain is the Spanish flu?

Answer 4

H1N1

Question 5

What is the strain for the Asian flu?

Answer 5

H2N2

Question 6

What is the Asian flu?

Answer 6

Bird flu

- mutation in wild ducks

Question 7

What strain is the HK flu?

Answer 7

H3N2

Question 8

What was the HK flu caused by?

Answer 8

By the antigenic shift

- descended from H2N2

Question 9

What are the 4 types on influenza?

Answer 9

1. Influenza A
2. Influenza B
3. Influenza C
4. Influenza D

Question 10

What can Influenza A cause?

Answer 10

Seasonal epidemics and pandemics in humans

Question 11

What are 2 subtypes of Influenza A?

Answer 11

1. Hemagglutinin
   - HA
2. Neuraminidase
   - NA

Question 12

How many strains does HA have?

Answer 12

18 subtypes

Question 13

How many strains does NA have?

Answer 13

11 subtypes

Question 14

What do the Influenza A strains cause?

Answer 14

Widespread of human disease over decades

- there are more to come

Question 15

What are the 2 strains of Influenza A that are currently found in humans?

Answer 15

1. H1N1

2. H3N2

Question 16

What was the new hybrid Influenza A virus consist of in 2009? (3)

Answer 16

1. Swine flu
2. Avian flu
3. Human strains

Question 17

What did the hybrid Influenza A cause?

Answer 17

The first Influenza pandemic in over 40 years

Question 18

What can Influenza B cause?

Answer 18

Seasonal epidemics in humans

Question 19

How many distinct lineages or strains are there for Influenza B?

Answer 19

2

- both contribute variably each year to the worldwide flu illnesses

Question 20

What is the order of the name of an Influenza virus? (5)

Answer 20

1. Virus type
2. Geographic location
3. Strain number
4. Year of isolation
5. Virus subtype

Question 21

Which Influenza is detected less frequently?

Answer 21

Influenza C

- dont know they are typically sick and as a result not much of the publics concern

Question 22

What can Influenza C cause?

Answer 22

Mild infections

Question 23

Where is Influenza D found?

Answer 23

Primarly in cattle

- not know to infect humans