Four people have died in the last three to four days, as there was some problem regarding preservation (of blood) at the blood bank of the hospital.

"Four people have died in the last three to four days. Apparently, there was some problem regarding preservation (of blood) at the blood bank of the hospital," De told IANS.
He said details would be available after the probe concludes.
Adverse reactions to transfusion, such as fever, chills, may appear during or within 24 hours of a blood transfusion.
Transfusion reactions require immediate recognition, laboratory investigation and clinical management.
Source-IANS