To determine:
The mode of transmission of tuberculosis in a population.
Introduction:
Tuberculosis is a potentially fatal disease caused by Mycobacterium tuberculosis which can infect almost every part of the body. It mainly infects the upper respiratory tract of the human body. The disease can be treated and cured with antibiotic and certain drugs.

Explanation of Solution
The bacterium Mycobacterium tuberculosis causes tuberculosis and lungs are primarily infected by this bacterium. The TB bacteria can invade other parts of the body apart from lungs, such as spine and kidney. Not every person exposed to TB bacteria gets the infection. There are two major medical conditions associated with TB bacteria, TB disease, and latent TB infection.
In a population, the infection of tuberculosis is transmitted by respiratory droplets which contain mucus and droplets are transferred from the infected person to others through coughing.
In a population, tuberculosis is transmitted through respiratory droplets from the infected person.
To determine:
The reason that homeless people are at risk for contracting tuberculosis
Introduction:
Tuberculosis is a potentially fatal disease caused by Mycobacterium tuberculosis which can infect almost every part of the body. It mainly infects the upper respiratory tract of the human body. The disease can be treated and cured with antibiotic and certain drugs.

Explanation of Solution
The reason that homeless people are at risk for contracting tuberculosis are given as follows:
1) Health care access is very limited to homeless people.
2) Misdiagnosis of tuberculosis with normal cold or pneumonia.
3) Homeless shelters are overcrowded which increases the transmission of disease through the respiratory droplet.
4) Tuberculosis is a bacterial disease which can be treated with antibiotics for several months, but the transient lifestyle of homeless people does not let them complete their antibiotics course.
Lack of healthcare facilities for the homeless people is the reason that they are more prone to tuberculosis.
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Chapter 21 Solutions
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