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Original: Ruan Guangfeng
As the weather gets hotter, the food that cannot be eaten at home will be more prone to spoilage
.
Many people first think of putting the food they can't finish eating in the refrigerator
.
.
Many people first think of putting the food they can't finish eating in the refrigerator
.
Recently, Nanjing Ms.
Lu suffered headaches, low-grade fever and diarrhea after drinking chicken soup stored in the refrigerator for 2 days
.
After examination, he was suffering from Listeria meningitis
.
Lu suffered headaches, low-grade fever and diarrhea after drinking chicken soup stored in the refrigerator for 2 days
.
After examination, he was suffering from Listeria meningitis
.
What is Listeria? Why does the chicken soup in the refrigerator have bacteria? Today we will talk about Listeria monocytogenes
.
.
1.
Listeria is by your side!
Listeria is by your side!
Many people are very unfamiliar with Listeria, thinking they are far away from us
.
In fact, it is right by our side, never far away
.
.
In fact, it is right by our side, never far away
.
Listeria monocytogenes is a kind of pathogenic bacteria.
It is quite common in the environment.
It can be found in soil, plants, animal feed, and human and animal feces
.
It is precisely because of this widespread characteristic that Listeria is more likely to contaminate our food and cause food-borne diseases in humans
.
It is quite common in the environment.
It can be found in soil, plants, animal feed, and human and animal feces
.
It is precisely because of this widespread characteristic that Listeria is more likely to contaminate our food and cause food-borne diseases in humans
.
The World Health Organization report estimates that listeriosis worldwide sickened 23,150 people in 2010, with a mortality rate of 25.
9%
.
9%
.
The Interagency Food Safety Analytics Collaboration (IFSA) has issued a report stating that Listeria is among the four most common pathogens causing foodborne diseases in the United States
.
Data show that Listeria causes approximately 2500 diseases and 500 deaths in the United States every year
.
.
Data show that Listeria causes approximately 2500 diseases and 500 deaths in the United States every year
.
In Europe, Listeria has also made people miserable
.
In 2011, the European Union reported 1470 cases of Listeria infection, with a mortality rate of 12.
7%
.
.
In 2011, the European Union reported 1470 cases of Listeria infection, with a mortality rate of 12.
7%
.
In fact, it is not uncommon for people to be infected or even die from eating food contaminated with Listeria monocytogenes
.
.
On April 9, 2015, the U.
S.
Centers for Disease Control and Prevention announced that at least 8 people in the U.
S.
suffered from Listeria infection after consuming Bule Bell’s ice cream products and sought medical treatment, resulting in 3 deaths
.
S.
Centers for Disease Control and Prevention announced that at least 8 people in the U.
S.
suffered from Listeria infection after consuming Bule Bell’s ice cream products and sought medical treatment, resulting in 3 deaths
.
In March 2018, a listeriosis outbreak in South Africa caused 180 deaths due to Listeria infection in dried meat sausages
.
.
In August 2018, 150 people were diagnosed with Listeria infection in Spain, and 1 person died.
The infection was related to the product of a local pork packaging factory containing Listeria
.
The infection was related to the product of a local pork packaging factory containing Listeria
.
In October 2019, two Germans died of Listeria infection because they ate sausages infected with Listeria
.
.
2.
Which foods are easily contaminated?
Which foods are easily contaminated?
Listeria is spread in different environments and foods.
As long as there is ample time, it can multiply
.
So, which foods are most likely to be contaminated by Listeria monocytogenes?
As long as there is ample time, it can multiply
.
So, which foods are most likely to be contaminated by Listeria monocytogenes?
According to past records, Listeria may contaminate soft cheese, spreads, cooked frozen chicken food, processed cooked turkey, frozen smoked fish, and unacidified pork tongue aspic.
Food
.
Food
.
The Centers for Disease Control and Prevention of the United States reminded that the following foods are at risk of Listeria contamination:
(1) Cheese made with unpasteurized raw milk
(2) Unsterilized mayonnaise
(3) Sandwiches prepared in advance and stored for a long time
(4) Bean sprouts that are not fully cooked
(5) Purchase salad packs or salads prepared in advance
The Centers for Disease Control and Prevention in the United States indicated that these foods may be contaminated with Listeria
.
.
The problem of Listeria contamination of food does not know national boundaries, and the same problem occurs in our country
.
.
In 2001, China conducted random inspections on 7 types of foods including raw meat, cooked meat, raw milk, and ice cream in 11 provinces and cities, and found that all these 7 types of food were contaminated with Listeria monocytogenes, among which raw meat was the most common.
.
.
Sampling inspections in Beijing in 2004 showed that many raw meats, cooked meats, raw vegetables and aquatic products were found to be contaminated with Listeria monocytogenes
.
Among them, raw meat is the most important source of risk in the food chain, while directly imported foods such as cooked meat and raw vegetables are the key to controlling Listeria
.
.
Among them, raw meat is the most important source of risk in the food chain, while directly imported foods such as cooked meat and raw vegetables are the key to controlling Listeria
.
So, don't ignore Listeria
.
.
3.
Why is there Listeria in the refrigerator?
Why is there Listeria in the refrigerator?
Many people use the refrigerator at home as a safe, and every time they put a lot of unfinished food in the refrigerator, they hardly clean up, thinking that putting food in the refrigerator is foolproof
.
.
In fact, the refrigerator is not a safe
.
This is because Listeria has an important characteristic-it is not afraid of cold and can be described as a "cold-blooded killer"
.
.
This is because Listeria has an important characteristic-it is not afraid of cold and can be described as a "cold-blooded killer"
.
Refrigerators cannot prevent the growth of bacteria, but can only slow down the pace of growth
.
Listeria can still grow and multiply slowly at cold storage temperatures as low as zero degrees, and general freezing is not enough to kill them
.
Therefore, Listeria may also be present in the refrigerator
.
.
Listeria can still grow and multiply slowly at cold storage temperatures as low as zero degrees, and general freezing is not enough to kill them
.
Therefore, Listeria may also be present in the refrigerator
.
In the news, the lady happened to be out of luck and drank chicken soup contaminated with Listeria monocytogenes
.
.
4.
How dangerous is Listeria?
In the news, this lady had meningitis.
How could Listeria be so powerful? How dangerous is it? Before talking about the harm, don't worry too much, because not all people who come into contact with Listeria through food will get sick, and food-borne listeriosis is relatively rare
.
How dangerous is Listeria?
In the news, this lady had meningitis.
How could Listeria be so powerful? How dangerous is it? Before talking about the harm, don't worry too much, because not all people who come into contact with Listeria through food will get sick, and food-borne listeriosis is relatively rare
.
However, in people who are sick, Listeria can bring serious and even fatal consequences
.
.
Patients with listeriosis usually develop symptoms within three to seventy days after eating contaminated food, including cold-like symptoms, nausea, vomiting, abdominal cramps, diarrhea, headache, constipation, and persistent fever.
Serious infections may also occur Sepsis and meningitis
.
Serious infections may also occur Sepsis and meningitis
.
Listeria is most likely to affect pregnant women, newborn babies, the elderly, and people with low immunity (such as AIDS, diabetes, and cancer patients)
.
Therefore, these people need to pay special attention to food hygiene and safety
.
.
Therefore, these people need to pay special attention to food hygiene and safety
.
In October 2018, a 35-year-old pregnant woman in Hong Kong went to the hospital for emergency caesarean section due to decreased fetal movement.
The pregnant woman gave birth to a child, but the baby boy suffered breathing difficulties after birth and was transferred to NICU
.
According to testing, both the mother and her baby boy were infected with Listeria
.
The pregnant woman gave birth to a child, but the baby boy suffered breathing difficulties after birth and was transferred to NICU
.
According to testing, both the mother and her baby boy were infected with Listeria
.
Pregnant women may not have serious symptoms after being infected with Listeria, but the bacteria can infect the fetus through the placenta, and may cause serious consequences such as miscarriage, sepsis and newborn infant meningitis.
Therefore, we also need to pay attention to it.
Up
.
Therefore, we also need to pay attention to it.
Up
.
5.
How to avoid Listeria infection?
How to avoid Listeria infection?
Pay attention to the daily use of the refrigerator:
Listeria is not afraid of cold
.
Therefore, do not store the food in the refrigerator for too long, and eat it as soon as possible to speed up the "liquidity" of the refrigerator
.
.
Therefore, do not store the food in the refrigerator for too long, and eat it as soon as possible to speed up the "liquidity" of the refrigerator
.
Try to buy fresh ingredients as often as possible and develop a good habit of eating fresh food
.
At the same time, the refrigerator should be cleaned and disinfected regularly
.
.
At the same time, the refrigerator should be cleaned and disinfected regularly
.
Pay attention to when buying and eating:
When choosing foods that are easily contaminated by Listeria monocytogenes (especially refrigerated ready-to-eat foods with a long shelf life), you should check whether the food packaging is intact
.
If the packaging is found to be damaged, it is best not to buy it
.
.
If the packaging is found to be damaged, it is best not to buy it
.
Avoid drinking unsterilized milk or eating unsterilized dairy products
.
.
The elderly, young children, pregnant women and patients with chronic diseases should control their intake of raw and cold foods and eat less or no frozen drinks to reduce the risk of Listeria infection
.
.
Pay attention to personal hygiene:
Wash your hands before and after handling food, before eating, after going to the toilet, or after changing diapers
.
.
In normal cooking, you should operate according to the five key points of food safety, keep clean, separate raw and cooked food, ensure that the food is heated thoroughly, and use safe water and raw materials
.
.
