My father not having any previous health issue s he is always hard worker taking only little rest daily On Wednesday he is having chill and fever On Thursday he went to local doctor and doctor advised him with some tables and drips On Friday he stays home he is k but telling unable to eat food & taste less again Saturday he had chill and fever and continued tables but Sunday morning he is telling fatigue w nohole day he had some ors drink & coffee but that day night after he slept everybody at home slept when we saw him in the morning he is no more. Please tell what could be the reason for death