Basic Clinical Lab Competencies for Respiratory Care: An Integrated Approach
5th Edition
ISBN: 9781285244662
Author: White
Publisher: Cengage
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When a food handler doesn't wash their hands after using the bathroom and introduces noravirus (cause of vomiting and diarrhea) into the food, what is the best term for the food in the chain of infection when the customers get sick?
Question 6 options:
a)
reservoir
b)
vector
c)
carrier
d)
vehicle
An area of microbiology that is concerned with the occurrence of disease in human populations is a. immunology b. parasitology c. epidemiology d. bioremediation
The epidemiological or disease triangle is a model of disease causation that proposes three factors contribute to an outbreak – an agent that causes the disease, a susceptible host, and an environment that brings the host and agent together. Some general changes within these three factors that may cause an infectious disease to emerge include:
A.
changes in populations or behavior of reservoir hosts or intermediate hosts
B.
microbial genetic mutation and viral genetic recombination or assortment
C.
environmental factors such as an increase in precipitation
D.
all of the above
E.
none of the above
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- Keeping your food covered, especially outdoors, when it is not actually being eaten is a way to prevent contracting an illness through the ____route of infection. a. biological vector b. mechanical vector c. parenteralarrow_forwardTwo periods of acute disease are the periods of illness and period of decline. (a) In what way are both of these periods similar? (b) In terms of quantity of pathogen, in what way are these periods different? (c) What initiates the period of decline?arrow_forwardWhich of the following statements reflects the pathogenesis of influenza virus? A-The virus frequently establishes persistent infections in the lung B-Viremia is common C-The virus enters the host in airborne droplets D-Viral infection does not kill cells in the respiratory tract E-Pneumonia is not associated with secondary bacterial infectionsarrow_forward
- Which of the following pathogens is the LEAST virulent? 1. Microbe B, ID50 = 1,000 cells 2. Microbe D, ID50 = 10 cells 3. None of the other four answers (Cannot be determined from information provided) 4. Microbe C, ID50 = 100 cells 5. Microbe A, ID50 = 100,000 cellsarrow_forwardThe collection of bacteria, archaea, and eukaryotic microbes that normally inhabit the human body are considered, _____________. a. opportunistic pathogens b. commensals c. microtubules d. obligate intracellular organismsarrow_forwardA/an __________ is a passive animal transporter of pathogens.a. zoonosis b. biological vector c. mechanical vector d. asymptomatic carrierarrow_forward
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