Lecture 6

Question 1

List 5 routes of virus entry

Answer 1

respiratory, alimerntary, skin, genital, conjunctiva

Question 2

These sizes of influenza virus do not remain suspended in air, ballistic trajectory of a few feet

Answer 2

large droplets (50-100 um)

Question 3

how are large droplets of influenza virus infective?

Answer 3

direct contât w/ mucous membranes of mouth, eyes, upper nasal passage

Question 4

What influences the transmission of intermediate sized influenza virus particles?

Answer 4

temperature of air in office, humidity, air currents, air velocit

Question 5

Where do the intermediate particles of the influenza virus reach?

Answer 5

upper respiratory tract

Question 6

What size of influenza viruses are small particle aerosols?

Answer 6

10 um

Question 7

intermediate size particles that have desiccated and shrunk, transmission primarily affected by air currents

Answer 7

droplet nuclei

Question 8

where do influenza virus small particle aerosols reach?

Answer 8

lowere respiratory trat

Question 9

spread of viruses by the bloodstream

Answer 9

Viremia

Question 10

What are some mechanisms of viral spread in the body?

Answer 10

local spread on epithelium, sub epithelial invasion, lymphatic spread, viremia, invasion of skin, invasion of cans, invasion of organs, invasion of fetus

Question 11

What is the major cause of dilative cardiomyopathy?

Answer 11

viral infections

Question 12

Where can viruses be shed from?

Answer 12

Resp and oropharyngeal secretions, feces, skin, durin, milk, genital secretions, blood