E. coli O104:H21 can cause outbreak of infection similar to that caused by E. coli O157:H7, the most common shiga-like toxin-producing E. coli (SLTEC). SLTECs are the most well-known causes of gastrointestinal illness and diarrhea.
Escherichia coli O104:H21
Escherichia coli O104:H4
Escherichia coli O121
Escherichia coli O157:H7
Enteroaggregative Escherichia coli
Campylobacter upsaliensis
Salmonella enterica subsp. enterica
Prevotella bivia