my 9 yo son has gotten a virus the last 2 winters and has one now. He gets croup (I know he is old for this, but it started when we moved from Texas to Colorado) and has difficulty breathing. The last 2 winters, they prescribed prednisone and cough syrup with codeine. He always gets better after the prednisone. Today, the ER doctor prescribed prednisone AND cephalaxin antibiotic. My son s ears, throat and chest x-ray were clear. The chest x-ray did not show pneumonia, but did show some bronchiolitis. Is it necessary for him to take the antibiotic? His highest fever was 105 (before medication) and today w/out fever reducers is 103. Thank you.