Low hb and high wbc. Is it possible?

My baby is 14 months old his current weight is 10 kg or around (around from last 3 months ). His HB is 8 gm And wbc is 15900 Please go through attached report. He has been caught by cold and cough many times . many fever repeated episodes. And suffered from diarrhea but now controlled. Actually his condition become worse in last 15 days. Vomit loose motion and no desire for food. And also body becomes loose and  face become white. His diet is very poor. He doesn't eat all things doesn't drink milk sufficient. At present his diarrhea and vomit is now stopped but he became much irritated in every minutes. He is suffering from huge weakness. So some medicine given by doctor for HB and appetite. But I want to know can I transfuse blood to him. Is it possible? And any supplement to increase all vitamins and minerals .