BAMS-transmission of infection

Question 1

What are the 6 parts in the chain of infection?

Answer 1

1. Infectious agent
2. Reservoir
3. portal of exit
4. means of transmission
5. portal of entry
6. suceptible host.

Question 2

what is the R₀ number?

Answer 2

the number of cases one case generates on average over the course of its infective period.

Question 3

what does an R₀ <1 mean?

Answer 3

the infection will die out in the long run.

Question 4

what does an R₀ >1 mean?

Answer 4

the infection will be able to spread in a population.

Question 5

compare small and large droplets in terms of their transmission ability.

Answer 5

Large droplets are good for infecting surfaces.

Small droplets can evaporate into the air where they can stay for minutes or hours.

Question 6

discuss influenza action

Answer 6

influenza has 2 surface glycoproteins:

Hemaglutinin H1-15 which is a key component for interaction with the cell.

Neuroaminidase N1-9 which the virus uses to break out of infected cells.

Question 7

What is Spaulding?.

Answer 7

This is used to describe the risk of infection:
Critical

Semi-critical

Non-critical

Minimal risk.