I have chronic fatigue immune dysfunction. it was triggered after meningitis. i see a specialist. i'm now hyper sensitive to things (even foods). does parents dna factor into this? or could an illness have triggered cfs regardless of my dna make up?

Biological variation is common in humans, and your genetic and immunological makeup provide susceptibility to your outcome. But, as has been seen with COVID-19, fatigue is far from an uncommon sequela, and I have seen months of fatigue and emotional changes after both meningitis and encephalitis, from viral and bacterial causes. Likely depends upon magnitude of brain effect. (burden of disease)