Tuberculosis

(TB)

Definition

Tuberculosis (TB) is an infection. TB may be either active or latent. Latent forms can stay in your body and not make you sick. Latent TB may become active if you are ill, have a weakened immune system, or for no known reason.TB infection most is most common in the lungs, but it can occur in other places in the body.

Causes

TB is a highly contagious disease caused by a specific bacteria. It is transmitted by air from one person to another. This can happen during coughing, sneezing, or talking. Once airborne, the bacteria can be breathed in by other people causing exposure or active infection. You can only pass the infection to other people if you have active TB.
Pathway to the Lungs
Air pathway breathing
Bacteria is inhaled through the mouth and nose and travels down into the lungs causing TB.
Copyright © Nucleus Medical Media, Inc.

Risk Factors

Infants, young children, and older adults are more susceptible to TB.Factors that may increase your chance of TB exposure include:
  • Close contact with a person infected with active TB
  • Living in or traveling to an area where there are high rates of TB
  • Working in certain occupations, such as farming, funeral homes, and healthcare
  • Living or working in crowded, indoor conditions, such as prisons, hospitals, homeless shelters, or nursing homes
Factors that increase your chance of getting active TB after exposure:
  • Chronic diseases that weaken the immune system:
  • Certain medications that weaken or suppress the immune system, such as chemotherapy drugs that treat cancer

leave comments
0
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals


Early Peanut Consumption Associated with Lower Risk of Peanut Allergy in High Risk Children
March 2015

Many medical groups felt that early exposure to certain foods like peanuts increased a child's risk of developing food allergies. However, newer research including this trial suggest that early exposure may actually decrease the risk of developing food allergies.

dot separator
previous editions

Breastfeeding May Decrease the Risk of Childhood Obesity
February 2015

Tonsillectomy May Reduce Number of Sore Throat Days in Children
February 2015

Research Review Finds Little Support for Nearly Half of Medical Talk Show Recommendations
January 2015

dashed separator

Advertisement

Our Free Newsletter
click here to see all of our uplifting newsletters »

 

Advertisement

Advertisement

DiggDeliciousNewsvineRedditStumbleTechnoratiFacebook