Sorry for the typo, I mean relations.
mkh9
Usually, someone with TB is infectious until they have 3 sputum samples from culture in a row that are negative. So I agree with the answer above that you were probably exposed to start with if you were around him a lot. You should be tested with a skin test or quantiferon gold test if you haven't yet been tested. If you are negative you could still be susceptible to getting it if he is not finished with the course of antibiotics. It takes a couple of months. Yes some TB strains can be multidrug resistant as well. So these are all questions you do need to ask your doctor as to how to handle dealing with not getting it and having sexual relaxtions. Usually, you get it by close contact. So it is from the person coughing or droplets as it says above.
regards,
mkh9
Here is from the Mayo Clinic website:
Tuberculosis is caused by bacteria that spread from person to person through microscopic droplets released into the air. This can happen when someone with the untreated, active form of tuberculosis coughs, speaks, sneezes, spits, laughs or sings.
Although tuberculosis is contagious, it's not easy to catch. You're much more likely to get tuberculosis from someone you live with or work with than from a stranger. Most people with active TB who've had appropriate drug treatment for at least two weeks are no longer contagious.
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What I would take from that is, first, has your partner been on antibiotics and/or other drugs for at least two weeks, and are the drugs "appropriate?" i.e., are they working? (Apparently there are drug-resistant forms of tuberculosis.)
And, you were more likely to get tuberculosis from your partner before either of you knew he had tuberculosis than you are to get it from him now if he is under appropriate treatment.
You could talk to his doctor if you are concerned.