My brother in law had the flu in December, went to the doctor and was given antibiotics Felt better for about 2 weeks when he relapsed. Went back to doctors, told him it was the flu again. He got a little better, then it came back. He had a cat scan, blood work and results showed nothing. His whole body aches , like the flu, diarhearra, stomach ache and cramps. Was given antibiotics again. No appetite.