A local day care center has several simultaneous cases of diarrhea.  A methylene blue fecal smear was taken during the outbreak from one of the children and revealed numerous PMN’s and occult blood.  Culture of the stool revealed a typical gram negative rod which fermented glucose but not lactose, was nonmotile and did not  produce H2S.  The agent which MAY have caused this outbreak was

  •  Campylobacter jejuni
  •  Escherichia coli
  •  Rota Virus
  •  Salmonella typhimurium
  •  Shigella sonnei