My son (age 15 years) was having fever on 5th, 6th and 7th november where the temperature was fluctuating between the range of 100 to 102. To rule out any signs of malaria or dengue, the doctor suggested blood report. Malaria and dengue test was negative but wbc count dropped. There is no fever / temperature in the past four days 8th to 11th and he is feeling better and active but today on 11th nov he is feeling little weak and sleepy. During this course of time we did two more cbc blood test on 8th and 10th november but still the wbc count is not improving. We are concerned about it and need to know 1. Reasons behind low wbc count. 2. Does wbc count drop during fever? 3. How much time does it take for the wbc count to recover to normal range? 4. Some advice on what to do next and when to do next cbc test. 5. Any other test needs to be performed? Here are the test results 6th nov dengue serology test (elisa) - negative (observed value 2.92 panbio units) malarial parasite - negative sgpt - observed value 36 haemoglobin - 14.8 rbc count - 5.31 mill/cmm wbc count - 2900 ul platelets - 203000 8th nov haemoglobin - 13.6 rbc count - 4.93 mill/cmm wbc count - 2200 ul platelets - 213000 10th nov haemoglobin - 13.5 rbc count - 5.09 mill/cmm wbc count - 2500 ul platelets - 184000 thank you.