Showing posts with label TB organism stain character transmission. Show all posts
Showing posts with label TB organism stain character transmission. Show all posts

Wednesday, October 12, 2011

TROPICAL DESEASE 16


6. TUBERCULOSIS


- Tuberculosis is a bacterial infection with many manifestations
and wide distribution in the world.
- The lungs are most commonly affected, but lesions may also
occur in the kidney, bones, lymph nodes, or disseminated
throughout the body.

- The causative organism is Mycobacterium tuberculosis, a rod 2
to 4 um in length and 0.3 um in thickness, it " is acid fast".

- Tubercle bacilli are aerobes thus the organs affected are
vascular and relatively high in oxygen tension; two species of
tubercle bacilli cause the disorder M.tuberculosis and M.bovis.

6.1 TRANSMISSION

This communicable disease caused by Mycobacterium tuberculosis,
often called tubercle bacilli.
- Is spread person to person.
- Airborne infectious particles are produced when a person with
infectious TB of the lung or larynx forcefully exhales such as
when coughing, sneezing, speaking,or singing.

- These particles are dispersed in the local environment, remain
airborne, and can be inhaled by someone sharing the same air
space.

- TB is more easily transmitted in closed air spaces where
ventilation is poor.

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