Hi. Thanks for your query. Noted the history about your husband having three bowel movements in the night after dinner, with severe changes like cold, sweating, shaking, bed diarrhea, dizzy, can not stand and see properly, wants to know whether this is severe flu. With the history you have provided, this does not seem to be flu. Looks to be severe gastroenteritis with bacteremia and/or septicemia. I would advise you the following: Take him urgently to the ER so that clinical evaluation, examination can be done. Resuscitating measures are very important. Water and electrolyte balance and functioning of the Kidneys and all other vital organs is mandatory.