Guillain-Barré Syndrome (GBS) is a real disease that effects about 3,000 people in the US every year. The cause of it is not well known, and it is thought to be caused largely by viral infections, so it would be a good choice to pull off such a deception.
Interestingly, COVID has recently been reported as causing a recurrence of the disease in some people.
Interestingly, COVID has recently been reported as causing a recurrence of the disease in some people.