My wife s UTI was not getting treated properly and recurred thrice in 9 months. So third time, doctor wrote some tests like Mantoux, Elisa , and HVS. As per the doctor, all tests came positive. In Mantoux test , the Induration was about 18mm in size. Is it something serious going on since all tests came positive. Doctor has given medicine for 1 month now and has asked her to come back after 1 month. Please suggest if something is serious here and we should take a second opinion