A client with tuberculosis sneezes in the waiting room and ...

[burchfield96]

A client with tuberculosis sneezes in the waiting room and infects several other clients who are sitting on the other side of the room. Which mechanism of transmission is involved in this case?
 
  A) Airborne
  B) Droplet
  C) Direct contact
  D) Indirect contact

Question 2

The student-nurse discusses transmission that involves contact of a susceptible host with a vehicle. Based on the chain of infection links, which exemplifies a vehicle?
 
  A) Animals
  B) Insects
  C) Reptiles
  D) Water

[nmyers]

Answer to Question 1

Ans: A
Feedback:
Airborne transmission occurs when microorganisms are carried in the air in small particles, called droplet nuclei, at distances that exceed a few feet. Droplet transmission theoretically is a form of contact transmission; the mechanism of transfer of the pathogen to the host is quite distinct from either direct or indirect transmission. Therefore, droplet transmission is considered a separate route of transmission. Droplets are generated from the source person primarily during coughing, sneezing, or talking and are propelled a short distance (<3 linen.

Answer to Question 2

Ans: D
Feedback:
Indirect contact involves contact of a susceptible host with a contaminated intermediate inanimate object, called a vehicle, such as a contaminated surgical instrument, needle, toy, soiled clothing, or bed linen. Vehicles also include food, water, and contaminated hands that are not washed. Indirect contact also includes vector transmission. Vectors are animal or insect carriers of infectious agents.