Sunday, July 20, 2008

what is the life cycle of tuberculosis


what is the life cycle of tuberculosis?
i'm doing a project on the life cycle of tuberculosis and i can't find anything that will make sense to my audience. if there's anyone that could give me some in site and share ur resources, that would be awesome!
Infectious Diseases - 2 Answers
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1 :
Tuberculosis nodules lying agaisnt ribs within the chest cavity of a wood bison ..life cycle surviavl of myocobacrterium bovis out side mammalian hosts . bacterial diseases caused by infection with mycobacterium bovis previuosly found in domestic cattles but occur in specific wildlife population .bovine tuberculosis is not naturally ocurring disease in wid animals and is believed to have been introduced into wid life population through contact with the domestic transmissions.the disease was discovered by Mr Robert Koch.
2 :
I am a retired nurse epidemiologist and was a TB case manager for 5 years. When people get the test on their arm the PPD (purified protein derivative) of TB and then you have to wait 72 hours to have it read. A lot of people will get a red spot because they are allergic to the detergent in the test. So you have to feel for the enduration under the red spot and measure it in mm. In some countries around the world they are vaccinated for TB and when they come to the USA we give them the PPD test and if it is over 5 mm then we put them on INH antibiotic for 6 months. They don't have an active case but think of TB in the lung like a ripe tomato with a dark spot and when you poke it, liquid runs out. So the INH builds a wall around the spots where ever it is in your body as TB even gets in to bone. If someone has an active case they have weight loss, night sweats, fatigue, feeling really sick and a cough that sprays droplets out in to the air and then some one comes along and inhales the droplets in to their lungs. People with an active case are put on 3 antibiotics and have to wear a mask in public until their sputum cultures comes back negative. Additional info at http://cdc.gov




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