My son has fever since monday. reached39.9c maximum.crp level is 23mg/l.started zithromax yesterday.paediatrician said his ear is mildly infected.

Use ABX,,,: At this point, it's wise to use the antibiotic for the course prescribed. If the infection doesn't improve, then a repeat visit to the doctor would likely be the next best step. Good luck.

Persistent hi fever: Despite antibiotics could mean overlapping viral/ bacterial infection as well, wrong diagnosis or not the drug of choice for that " bacterial infection".When dealing w kids , always good to know age & weight. It helps pediatricians greatly w diagnosis , treatment, decision making & urgency of the matter! alternate tylenol (acetaminophen) w Motrin every 4 hrs for fever and comfort. Ff up if no better in 2-3 days.