Soweit ich den Text verstehe, geht es nur im übertragenen Sinne um eine disease. Vorstellen muss man sich hier weder AIDS noch Ebola oder COVID-19, sondern es heißt:
I'm not going down on my knees begging you to adore me
Can't you see it's misery and torture for me
When I'm misunderstood try as hard as you can
I've tried as hard as I could
To make you see
How important it is for me
Here is a plea from my heart to you
Nobody knows me as well as you do
You know how hard it is for me to shake the disease
That takes hold of my tongue in situations like these
Understand me (4x)