A two year old child with a long history of purulent nasal discharge & fever now presents with conjunctival congestion and edema. His fever is 102o/103oF and WBC count 12000. The culture of eye discharge was negative. X-ray show opacification of ethmoid sinus. Which of the following should be the next step in evaluating this patient -
CT scan Urine culture Blood culture Repeat culture of eye discharge