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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 .
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.
Shiga-like toxin (SLT) is a historical term for similar or identical toxins produced by Escherichia coli. [3] The most common sources for Shiga toxin are the bacteria S. dysenteriae and some serotypes of Escherichia coli (shigatoxigenic or STEC), which include serotypes O157:H7, and O104:H4. [4] [5]
Though it is harmless while in the gut, ingesting certain types of E. coli — such as E. coli O157:H7 — can cause severe gastrointestinal issues, according to the Mayo Clinic. One way E. coli ...
Foodborne illness (also known as foodborne disease and food poisoning) [1] is any illness resulting from the contamination of food by pathogenic bacteria, viruses, or parasites, [2] as well as prions (the agents of mad cow disease), and toxins such as aflatoxins in peanuts, poisonous mushrooms, and various species of beans that have not been boiled for at least 10 minutes.
On January 12, 1993, Phil Tarr, then a pediatric gastroenterologist at the University of Washington and Seattle's Children's Hospital, filed a report with the Washington State Department of Health (DOH) about a perceived cluster of children with bloody diarrhea and Hemolytic Uremic Syndrome (HUS) likely caused by E. coli O157:H7. [15]
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.
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.