Assertion: gastroenteritis's cause | /r/HasProperty | two serotypes
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text: ; several forms of the bacteria exist, but Enterohaemorrhagic E. coli (EHEC) is the most common cause of Travellers' diarrhoea Salmonella - Gram negative flagellated bacillus (two serotypes most commonly associated with gastroenteritis, S. typhimurium and S. enteritidis), transmitted through undercooked poultry or raw eggs; results in fever, vomiting, abdominal cramps, and bloody diarrhoea