<s>[INST] I am 29 y.o  i WAS diagnosed having active kochs  infection on left upper lobe last October 2011 and my daughter (going 3)was positive on Mantoux Test also.But having no symptoms at all.After 1 month having sick leave may x- ray result was partially resolving.Still taking my medication religiously and my daughter too regulary taking her meds.After 3 months from now my husband will be home.He is working in a cruise ship.I am so afraid of he might be infected as well since hell be expose to me and my daughter..Are we still contagious by that time??? [/INST] Hellos you mentioned that you WERE a patient for tuberculosis left upper lobe and your daughter was Manitou positive. You took anti-tubercular treatment very REGULARLY along with your daughter. As I have noted in my patient that within 1-2 month with active anti-tubercular treatment sputum become NEGATIVE (NON-CONTAGIOUS) & airborne infection is not possible. So according to this query you and your daughter are not able to spread infection to others due to air. So don't fear avoid mouth-to-mouth contact (just for precaution) ,otherwise there is not a cause of concern. Good luck. </s>