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Escherichia coli O157:H7 is a serotype of the bacterial species Escherichia coli and is one of the Shiga-like toxin–producing types of E. coli. It is a cause of disease , typically foodborne illness , through consumption of contaminated and raw food, including raw milk and undercooked ground beef .
E. coli is a gram-negative, facultative anaerobe, nonsporulating coliform bacterium. [18] Cells are typically rod-shaped, and are about 2.0 μm long and 0.25–1.0 μm in diameter, with a cell volume of 0.6–0.7 μm 3. [19] [20] [21] E. coli stains gram-negative because its cell wall is composed of a thin peptidoglycan layer and an outer membrane.
Enterohemorrhagic E. coli (EHEC): A type of EHEC, E. coli O157:H7, can cause bloody diarrhea and hemolytic uremic syndrome (anemia and kidney failure). Enterotoxigenic E. coli (ETEC) produces a toxin that acts on the intestinal lining, and is the most common cause of traveler's diarrhea.
The strain involved, E. coli O157:H7, can cause serious illness and was the source of a 1993 outbreak that killed four chil ... Symptoms for E. coli include severe stomach cramps, diarrhea and ...
The Greater Omaha Packing Co. says one of its products tested positive for E. coli O157:H7, a strain known to cause severe intestinal infection in humans. Your ground beef may be contaminated with ...
The U.S. Centers for Disease Control and Prevention recommend that "all stools submitted for routine testing from patients with acute community-acquired diarrhea (regardless of patient age, season of the year, or presence or absence of blood in the stool) be simultaneously cultured for E. coli O157:H7 (O157 STEC) and tested with an assay that ...
Serotype O157:H7 may trigger an infectious dose with 100 bacterial cells or fewer; other strain such as 104:H4 has also caused an outbreak in Germany 2011. Infections are most common in warmer months and in children under five years of age and are usually acquired from uncooked beef and unpasteurized milk and juice.
Symptoms of intestinal infection usually begin between 8 and 52 hours after you have been infected with E.coli, [2] this is the incubation period. The incubation period is the time between catching an infection and symptoms appearing. [12] Symptoms: abdominal cramping, pain or tenderness; watery or mucoidy diarrhea; nausea and vomiting, in some ...