Baby at 6 Months Shows Abnormal Blood Test Results

A 6-month-old baby’s blood test results indicate elevated white blood cells, decreased red blood cell count, and increased platelets, along with abnormal levels of red blood cell sedimentation, hemoglobin, lymphocyte count, mean corpuscular hemoglobin concentration, mean corpuscular volume, mean platelet volume, median cell count, and median cell ratio. What could be the cause?
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