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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is TB Contagious?

i brought my friend in the emmergency 2weeks ago because she vomit blood.they made some test on her but they got a negative result for ptb,they release her from the hospital but she ask them to comeback on the following week. one day i came to work with her before her doctor s appointment. last tuesday a day of her doctor s appointment they told her that she was positive in tubercolosis.I m afraid i might got her tb virus or bacteria?
Thu, 4 Sep 2014
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General & Family Physician,  's  Response
Hi,

Sorry about your friend hope she recovers soon.

TB especially PTB (Pumonary TB that affects lungs), is contagious and it is airborne that is, it spreads through air when an infected person coughs. Although one can get infected with this bacteria, it does not lead to disease in all cases. It depends on the individual's immunity. Going by the history you give, the chances of you develpoing TB disease is very less (less than 5%) provided your immunity is good. And if her TB is other than PTB, it does not spread. If you develop fever, cough with flam, seek medical attention.

Take care
Rajesh
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Is TB Contagious?

Hi, Sorry about your friend hope she recovers soon. TB especially PTB (Pumonary TB that affects lungs), is contagious and it is airborne that is, it spreads through air when an infected person coughs. Although one can get infected with this bacteria, it does not lead to disease in all cases. It depends on the individual s immunity. Going by the history you give, the chances of you develpoing TB disease is very less (less than 5%) provided your immunity is good. And if her TB is other than PTB, it does not spread. If you develop fever, cough with flam, seek medical attention. Take care Rajesh