So sorry your family all had this! This is the one that runs rampant through cruise ships. My sons doctor said it spreads so easily because you are actually still contagious for about
two seeks after you have had it and people go back to work and school and spread it around.
My son got this when he was around five - right after he had been on antibiotics for ten days! His body was depleted of good bacteria because of the antibiotics and he almost ended up in the hospital he dehydrated so quickly.
Hope you feel better soon!