ROMAINE LETTUCE-OUTBREAK OF E.COLI 2018
ROMAINE LETTUCE:
Romaine or cos lettuce (Lactuca sativa L. var. longifolia) is a variety of lettuce that grows in a tall head of sturdy dark green leaves with firm ribs down their centers. Unlike most lettuces, it is tolerant of heat. It is more nutritious than iceberg lettuce. In North America, romaine is sold as whole heads or as "hearts" that have had the outer leaves removed and are often packaged together
romanine lettuce
cross section of heart of romaine lettuce
- Escheria coli(E.coli)
e.coli in under electron micro scope
properties of E.coli:
1.gram negetive rod.
2.facultative anaerobe.
3.ferments glucose.
4.most strain are lactose farmenters
5.catalase possitive
8.oxidase negetive.
Morphological and gram staining properties of E.coli:
- morphological property:they are bacilli with peritrichous flagella
- gram stain property:gram negative
- Diseases caused by E.coli(commonly):
- urinary tract infection(UTI):cystisis,pyelonepritis(by certain O-sero type)
- systemic infections:
- wound infection
- pneumonia,septicemia
- DIC etc…..
- intestinal tract infection like diarrhoea,dysentry.
(more discussion about bacteria in anoter article link is below)
link:
Source of outbreak:
E. coli outbreak spreads as source of tainted lettuce remains a mystery.
Public health officials are warning consumers not to eat store-bought, chopped romaine lettuce as an E. coli outbreak linked to the vegetable worsens.
Fifty-three related E. coli infections have been reported in 16 states, according to the Centers for Disease Control and Prevention.
In the past several days, 18 new cases have been added to the CDC’s investigation, including some in states where E. coli illnesses hadn’t yet been reported. Additionally, the CDC said, “nine more hospitalizations have been reported, including two people who developed a type of kidney failure called hemolytic uremic syndrome.”
Maine is not among the states where people were infected, according to the CDC.
The CDC said the exact source of the tainted lettuce hasn’t been identified, but that “information collected to date indicates that chopped romaine lettuce from the Yuma, Arizona, growing region could be contaminated … and could make people sick.”
E. coli outbreak spreads as source of tainted lettuce remains a mystery.
Public health officials are warning consumers not to eat store-bought, chopped romaine lettuce as an E. coli outbreak linked to the vegetable worsens.
Fifty-three related E. coli infections have been reported in 16 states, according to the Centers for Disease Control and Prevention.
In the past several days, 18 new cases have been added to the CDC’s investigation, including some in states where E. coli illnesses hadn’t yet been reported. Additionally, the CDC said, “nine more hospitalizations have been reported, including two people who developed a type of kidney failure called hemolytic uremic syndrome.”
Maine is not among the states where people were infected, according to the CDC.
The CDC said the exact source of the tainted lettuce hasn’t been identified, but that “information collected to date indicates that chopped romaine lettuce from the Yuma, Arizona, growing region could be contaminated … and could make people sick.”
endemicity:
An E. coli outbreak that has sickened nearly three dozen people in 11 states is linked to chopped romaine lettuce from Arizona, health officials said.
None of the 35 people who have become sick since the outbreak began last month has died, but 22 have been hospitalized, the CDC says
preventive measurement by u.s govt:
The health agency added: “Before purchasing romaine lettuce at a grocery store or eating it at a restaurant, confirm with the store or restaurant that it is not chopped romaine lettuce from the Yuma, Arizona, growing region. If you cannot confirm the source of the romaine lettuce, do not buy it or eat it.”
This includes removing from sale some product offerings and posting signage,” Edington said. “Our company has changed our source of supply. All bagged salads and other items containing chopped romaine lettuce are now sourced from farms in growing regions not affected by the CDC alert
Federal officials urged consumers Friday not to buy or eat any romaine lettuce from grocery stores or restaurants without knowing its exact source, after a multistate E. coli outbreak linked to lettuce grown in Yuma, Arizona, was reported by the U.S. Centers for Disease Control and Prevention.
Though there have been no reported E. coli cases from romaine in Maine, New Hampshire or Massachusetts, the Maine Center for Disease Control & Prevention also issued an alert Friday warning about the hazards of eating romaine.
The Maine Department of Agriculture, Conservation and Forestry said E. coli cases that occurred after March 29 likely hadn’t been reported yet to the Maine CDC. “This takes an average of two to three weeks,” the department said in an alert it posted Friday.
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Symptoms manifested :
E. coli symptoms include “severe stomach cramps, diarrhea and vomiting,” the U.S. CDC said. While most people recover within a week, some infections are severe or life-threatening, the agency said. In rare cases, it can cause hemolytic uremic syndrome, a combination of anemia, acute kidney failure and a low platelet count in the blood.
who are most affected:
Health officials said children younger than 5, seniors older than 65 and those with weak immune systems are most vulnerable.
cases come infronts(mostly) by affected people:
The U.S. CDC is reporting 53 E. coli cases in 16 states, resulting in 31 people being hospitalized between March 13 and April 6, which is the latest data available.
Fifty-three related E. coli infections have been reported in 16 states, according to the Centers for Disease Control and Prevention.
In the past several days, 18 new cases have been added to the CDC’s investigation, including some in states where E. coli illnesses hadn’t yet been reported. Additionally, the CDC said, “nine more hospitalizations have been reported, including two people who developed a type of kidney failure called hemolytic uremic syndrome.”
Maine is not among the states where people were infected, according to the CDC.
The CDC said the exact source of the tainted lettuce hasn’t been identified, but that “information collected to date indicates that chopped romaine lettuce from the Yuma, Arizona, growing region could be contaminated … and could make people sick.”
New cases were reported to the CDC in Arizona, Alaska, California, Montana and Louisiana. Previously, the E. coli reports had been centered in the Mid-Atlantic and Midwest, from Connecticut to Michigan. A 66-year-old woman in New Jersey, Louise Fraser, filed a lawsuit Tuesday in federal court against Panera Bread, after claiming she ate contaminated romaine lettuce there, which sent her to the hospital for two weeks.
Fraser’s attorney, Bill Marler, told The Washington Post on Sunday that he’d expected the number of reported illnesses nationwide to grow as officials investigate how romaine harvested from the Yuma region made it to retailers and restaurants around the country.
Fifty-three related E. coli infections have been reported in 16 states, according to the Centers for Disease Control and Prevention.
In the past several days, 18 new cases have been added to the CDC’s investigation, including some in states where E. coli illnesses hadn’t yet been reported. Additionally, the CDC said, “nine more hospitalizations have been reported, including two people who developed a type of kidney failure called hemolytic uremic syndrome.”
Maine is not among the states where people were infected, according to the CDC.
The CDC said the exact source of the tainted lettuce hasn’t been identified, but that “information collected to date indicates that chopped romaine lettuce from the Yuma, Arizona, growing region could be contaminated … and could make people sick.”
New cases were reported to the CDC in Arizona, Alaska, California, Montana and Louisiana. Previously, the E. coli reports had been centered in the Mid-Atlantic and Midwest, from Connecticut to Michigan. A 66-year-old woman in New Jersey, Louise Fraser, filed a lawsuit Tuesday in federal court against Panera Bread, after claiming she ate contaminated romaine lettuce there, which sent her to the hospital for two weeks.
Fraser’s attorney, Bill Marler, told The Washington Post on Sunday that he’d expected the number of reported illnesses nationwide to grow as officials investigate how romaine harvested from the Yuma region made it to retailers and restaurants around the country.
previous outbreak in similar causes:
Outbreaks of E. coli illness associated with leafy green vegetables are not new. The complaint filed on Fraser’s behalf lists nearly 20 outbreaks from 1993 to 2011 that mostly involved romaine lettuce. In 2006, a nationwide outbreak involving contaminated baby spinach sickened more than 200 people.
Other products, such as flour and nut-free substitutes for peanut butter, have been at the center of E. coli outbreaks in recent years. In 2015, Chipotle Mexican Grill, a restaurant chain popular for its promise to offer high-quality and sustainably sourced food, found its reputation tarnished after 60 people from 14 states were infected with E. coli.
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