Answer to question 2 - patients who report fewer colds or 'great immune systems'
Take into consideration a number of factors...
*Have these people been researched? E.g. To confirm they have a unique anti viral defense mechanism paradoxically found in people who are crippled by overwhelming symptoms? No, no studies have been done.
*Are people with no colds sick for 1 year, 5 years, 20 years, or 40 years? No studies have been done once more. Logically, the longer you are sick with 'on' immunity, the weaker it becomes if you then lose antibody avidity = immune suppression city as your body 'forgets' to make antibodies for which it is meant to be remembering. This might explain PWME who like myself claim they are infected 24/7, or almost. It took me decades to get like this though, years ago I never had raised glands in my neck unless I did something, and never sneezed each day or had a raised temperature. If anything I had a low temperature. So our bodies change over time. This makes sense immunologically. Again none of us have been researched. What makes sense is chronic immune activation will weaken your immune system and cause inflammation. This ties in with the eventual development of autoimmunity or multiple autoimmune illnesses over time. People with immune and neurological illnesses generally report more colds not less.
*Are people with no colds housebound? This reduces cross infection from going outside!!!
*Are people with no colds no longer using public transit/at work/socializing? ditto above!!!
*Are people with no colds caring for children or near them? Children are riddled with infections.
*Are people with no colds severely effected or mild/moderate? More severe effected see less people
hence it's logical they get less colds, even if they were (ironically) immune suppressed.
*Are people with no colds sick with a CFS type illness or an ME neurological inflammation based illness?
No test exists, and claims are anecdotal and limited to the internet. No research has found any such finding, in fact the opposite finding of poor NK function etc.
*Are people with no colds sick with the same illness as others who report the opposite? No one knows.
All of these factors determine what someone's experience is with ME CFS.
So we come back to square one as we do with all CFS research:
Scientists don't know what ME or CFS is, so the patients diagnosed are a mixed bag of unrelated people
who may or may not have it. Most of them will though but without a test, statistically this will never happen that all people diagnosed turn out to have it.
*This hugely affects research progress which is why few 'CFS' studies show any consistent findings (bangs head on desk).
*Governments make sure CFS is treated as fatigue based pseudo mental illness where anyone can join the club.
*British reduced the CFS criteria to include people with active mental illness (Oxford F48.0 used in the PACE trial), Ergo British 'CFS/ME' research is plagued by state funded professional gangsters who believe all cases of CFS are in the mind and if you don't recover with the fraud based therapies, this is proof you are crazy.
This will all end in the near future when different organic causes are found in subsets of CFS, or indeed the same underlying cause is found which then branches off into different subsets due to varying factors such as sex and genetics.
I'm sorry to learn you are new to 'CFS', but you'll find some great people here and some fantastic minds from all sorts of different backgrounds who stick together like glue and know, finally, some real change is happening that will help us all, irrespective if we have or think we have ME, CFS, Chronic Lyme and so forth.