Podcast
Questions and Answers
What percentage of latent tuberculosis infections progress to active disease if left untreated?
What percentage of latent tuberculosis infections progress to active disease if left untreated?
- 50%
- 75%
- 10% (correct)
- 25%
What is the main cause of tuberculosis?
What is the main cause of tuberculosis?
- Legionella pneumophila bacteria
- Streptococcus pneumoniae bacteria
- Mycobacterium tuberculosis bacteria (correct)
- Haemophilus influenzae bacteria
How is tuberculosis primarily spread from one person to another?
How is tuberculosis primarily spread from one person to another?
- Through mosquito bites
- Through the air when people with active TB cough, spit, speak, or sneeze (correct)
- Through contaminated food and water
- By direct physical contact with an infected person
What is the main method for diagnosing latent tuberculosis?
What is the main method for diagnosing latent tuberculosis?
Who are considered to be at high risk for tuberculosis and should be screened?
Who are considered to be at high risk for tuberculosis and should be screened?
Flashcards
TB infection progression
TB infection progression
10% of latent TB infections develop into active TB if untreated.
Cause of TB
Cause of TB
Mycobacterium tuberculosis bacteria cause TB.
TB spread method
TB spread method
TB primarily spreads through the air when people with active TB cough, spit, speak, or sneeze.
Latent TB diagnosis
Latent TB diagnosis
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High-risk TB groups
High-risk TB groups
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Study Notes
Tuberculosis Basics
- If left untreated, approximately 5-10% of latent tuberculosis infections progress to active disease.
- The main cause of tuberculosis is Mycobacterium tuberculosis bacteria.
Transmission and Diagnosis
- Tuberculosis is primarily spread from one person to another through the air when an infected person coughs, sneezes, or talks, releasing droplets that contain the bacteria.
- The main method for diagnosing latent tuberculosis is the tuberculin skin test (TST) or interferon-gamma release assay (IGRA).
High-Risk Groups
- Individuals considered to be at high risk for tuberculosis and should be screened include:
- Those living with HIV/AIDS
- People who have recently immigrated from areas where tuberculosis is common
- Healthcare workers
- Residents and employees of high-risk congregate settings (e.g. correctional facilities, homeless shelters)
- People who have had close contact with someone who has active tuberculosis
- Those who have a weakened immune system (e.g. due to medications or underlying medical conditions)
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