No stupid question ever exist in the quest for learning and obtaining knowledge and the wisdom with which to use it. There are myriad theories as to the origins of MS. The truth is, they do not know. If they knew the cause, then they could create a cure (or work towards it while teaching preventative means towards avoiding MS). There has to be objective data that works in clinical trials. Some DMDs show promising results only to later determine that the person went into remission without the DMD actually working.
Your dad has MS. As this is a compromise of his immune system, your girlfriend should avoid handing things to your dad or to you. You should make sure that you do not contaminate/spread mono to your dad during your girlfriends bout with mono.
Mono and CFS (Chronic Fatigue System), in my non-medical opinion, are more closely related. I had a cousin who spent 10 years with CFS and finally got through it.
Hi, bruno. I completely understand your concern. Although there is a suspected link between EBV and MS, it's doubtful it's just that alone. It's a little like the chicken and the egg -- is EBV the trigger or does it just create the right environment in the body and make us more susceptible to developing MS? As you said, not everyone with EBV goes on to get mono.
I'm not a doctor but I think that if it's not full blown mono/chronic fatigue (inactive EBV) it should be okay. Perhaps you can ask your father's MS specialist about this but again, unfortunately there is not a definitive answer.
Although MS is not considered to be hereditary, there is a genetic component. That is why you sometimes see it run in families -- but it depends on your genetic blueprint. (And who knows, in some of us maybe a gene that's been mutated?! Like many others, it's nowhere in MY family, at least that I know of.) There's unfortunately just so much that is unknown. Although I don't think there's a problem with this girl, it's good that you're being aware and asking these questions.