Tuberculosis ( Tb ) Is Infectious Disease Caused By Bacterial Pathogens From Mycobacterium Tuberculosis Complex

1269 Words Feb 7th, 2015 6 Pages
INTRODUCTION
Tuberculosis (TB) is infectious disease caused by bacterial pathogens from Mycobacterium tuberculosis Complex. Tuberculosis affects various organs of the body forming granulomas at the site of infection. The pulmonary TB is the most common form (Anon, 2015).Only the pulmonary form is infectious with aerosol transmission after a sneeze or cough from an infected individual. Once an individual is infected with Mycobacterium tuberculosis Complex, clinically, it can either lead to a TB infection (Latent/Inactive TB) or an Active TB. In TB infection, the bacteria reside in the body in an inactive state without causing any symptoms or being contagious. This is due to the immune system of the body which prevents the bacteria from multiplying and causing local damage in the body. The active TB is contagious and is characterized by the common clinical symptoms like, prolonged cough with or without blood and sputum (weeks-months), unintentional weight loss, chronic fatigue, low grade fever (on and off for weeks-months), and night sweats. A Latent TB can become active if there is a compromise in the immune system of the body. The time period between infection and clinical symptoms vary from weeks to years again depending upon the immune system of the body. In vulnerable groups, the symptoms appear after a few months of infection (Mayoclinic.org, 2015).
The incidence of TB remains high in the UK as compared to other Western European Countries.There were 7,892 cases…
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