Hi, My niece of 40 days had suffered from dengue fever few days back. now in hospital undergoing treatment for the same. she has recovered from platelets count of 24k to 54k. But, today her HB has come down to 7.9 and fever on 100 degree has also occured. What can be the real cause and now doctors are saying of blood transmission post infection test. what can be the cause of HB decrease...and woudl there be any side effects of blood transmission? Please suggest and advise by when she'll be ok?