the two only mycobacterial pathogens are:
1-mycobacterium tuberculosis--cause tuberculosis and is life threatening unless you are immunized ,,and i suppose that all of us vaccinated since its vaccine is given after birth.
2-mycobactirium leprae--cause leprosy life threatining ,very infectious, spread by touch ,,so if it was ,all the people you know + you are dead.
both diseases are manifested more as multisystemic symptoms and dont affect lips.
sure it will reveal yeast infection for all people , cuz candida albicans a fungi part of the normal flora of the skin((normaly present on skin)),the qusesion would be if you have a candida overgrowhth or not.
candida over growth can cuz mucocutanious candidiasis at the mucocutaniuous junction of lips((vermilion)) and is difficult to treat ((chronic)),but unless you have systemic signs and symptoms fevers,chills,etc--i dont think that you have candida.