Hi, my family recently caught the stomach flu (norovirus I believe) starting with our baby, then my husband, then toddler, and I.  My daughters and I took probiotics during the flu and my husband didnt and we have either light yellow to mustard almost white colored stools,but he does not?
STOMACH FLU IS NOT A FLU.IT MAY BE VIRAL OR PARASITIC INFESTATION, OR BACTERIAL INFECTION DUE TO UNHYGIENIC FOOD .YOUR FAMILY MIGHT HAVE TAKEN SAME FOOD.DO NOT WORRY.TAKE CARE FOR DENY Chat Doctor. GIVE PLENTY OF O R S WITH MINERAL WATER & COCONUT WATER.GIVE SEMI SOLD DIET IT WILL CONTROL WITHIN A WEEK Itself.GIVE CURD, BANANA.IF NOT CONTROLLED CONSULT YOUR DOCTOR.KEEP YOUR HANDS CLEAN WITH SOAP & WATER.WHITE COLORED STOOL MAY BE DUE TO JAUNDICE, CHECK IT.