<s>[INST] Hi, My son, around 3 & half year old has got fever few days back. Doctor gave him Maftel-P and antibitics. But fever was repeating in every 6 hours. Hence as per the advice of doctor, we get his blood test done. The report is normal except ESR was 13. He is also having cold and cough. Now still the fever is coming in every 8 to 10 hours. Though the same has reduced from 4 times a day to 2 time but still even after a week, the fever us still coming. Can u please guide us why it is so ? Is there anything to worry about or it will go naturally with the cough and cold. [/INST] Hi, Yes, fever is a common occurrence during cough and cold(any respiratory infection). ESR of 13 also can be taken as normal for him. But fever will usually subside by 3-4 days.  Here, since fever is still coming even after 1 week, there is a chance that the organism is resistant to the given antibiotic.  So I would recommend you to get back to your doctor for a reassessment and changing the antibiotic, especially if he is having wet type of cough, yellowish nasal discharge or breathing difficulty. Since fever frequency is coming down, something serious is unlikely. Hope I have answered your query. Let me know if I can assist you further. Take care  </s>