the positive test may just be a relapse from her previous mono infection. she may need to have an ebv titer -- a more sensitive mono test that will determine if this is a new infection. you don't have to kiss anyone to get mono. it can just happen from being around humans who have it.
my mother (69) just tested positvie for mono for the 2nd time in 13 months. she hasn't kissed anyone in many years why? . she was so weak and tired last year i thought we were going to loose her. she has been back to her normal self for about 4 months until two weeks ago when she tested positive for strep and an ear infection. she has been on antibotics for 2 weeks and asked the dr to test her again for mono and the test came back positive. . she hasn't kissed anyone in many years. could something else be causing a false positive. are there any other tests she should ask for to rule out something they are missing.