My son is 14. He ran fever with round the clock tylenol doses for the entire week. He was first prescribed a z pack and cedifier sp?, which wasn t working, so they put him on eurithomyacin sp? None of that worked, so they did a mono test and it was negative (also neg flu and strep), but his white blood cell count was 18.0, granulocytes were 16.4. Everything else was within normal range, but on the high end. He developed thrush in his throat and chest to his horror, so now he s on fluconazole 200mg/3days. What other virus would cause such a thing?