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Lester is a rare food-based pathogen that, unlike other microorganisms, can survive in cold storage conditions, which means that putting food in the fridge does not combat the tenacious vitality of Lester.
, however, not all listeria can cause disease, and of the 20 known listeria, only monocyte-prolibation is a major cause of human infection.
, the source of listeria, monocyte progencies listeria are widely found in the environment and can be found in many foods.
such as minced meat, raw meat dishes, raw sausage meat and raw milk.
In addition, ready-to-eat foods that have not been further sterilized after processing may also contain Lester bacteria, such as cheese (made from raw or pasteurized milk), pre-cut salads and vegetables, and deli salads or thinly sliced sausage products.
this is because Lester bacteria can survive for a long time in recesses in food processing plants that are difficult to clean and disinfect, which in turn causes the bacteria to enter continuously during food production.
or hot smoked fish are usually contaminated and are therefore suspected of spreading the disease.
other raw fish and seafood (e.g. sushi, sash, oysters) or pickled products (e.g. minced fish) may also be affected.
an estimated 1,600 people a year develop listeria from eating foods contaminated with monocyte-proligenic listeria, and about 260 people die, according to the U.S. Centers for Disease Control and Prevention.
infection during pregnancy can lead to miscarriage, premature birth and still birth.
In addition, Lester's disease mainly occurs in people with weakened immune systems due to old age, past illness or drug intake, who often suffer from blood poisoning, encephalitis or meningitis, and endoarthritis or bacterial arthritis.
in healthy individuals, a Lester infection can cause gastrointestinal inflammation and fever, but the progression is usually mild.
2018, Robert F. Kennedy said. The Koch Institute (RKI) reported 701 cases of severe indulging Lesteriasis, equivalent to 0.8 cases per 100,000 inhabitants.
most of the reported cases of Lester's disease, such as blood poisoning, meningitis or miscarriage.
addition, the disease is fatal in 5% of cases.
did the bacteria infect humans? Monocyte prolific listeria is a co-cytobacteria that survives macrophages and invades a variety of normal non-devouring cells, such as endocystres, liver cells, and endocystretes.
In all of these cell types, pathogenic listeria goes through an in-cell life cycle that involves early escape from the phagocytosis of the bubble, rapid proliferation in the plasma, and bacteria-induced movement based on the myostoma protein, which spreads directly to neighboring cells, thus restarting the cycle.
in this way, Lester bacteria spread in host tissues that are not affected by the body fluids of the immune system.
addition to actoprotein polymerization, monocyte proliferator Listeria also uses host cell spitting to promote intercellular diffusion.
previous studies have found that monocyte prolibiosis promotes survival by inducing mitochondrial autophagy in macrophages.
can I prevent Lester infection? Avoid raw vegetables and meat that have not been disinfected; raw cooked food should also be stored separately to avoid bacterial cross-infection; leftovers taken from the refrigerator should be kept heated for more than 2 minutes at a central temperature above 70 degrees C; and especially opened milk should not be stored for more than 24 hours and heated before drinking to sterilize.
pregnant women, the elderly or people with weak immunity are advised to eat only fully heated fish and seafood.
Of course, the most important thing is to regularly thoroughly disinfect the refrigerator, reduce the possibility of liste bacteria in the refrigerator, otherwise, for fruit and other food can not be heated to sterilize, or can not escape the "claws" of Liste bacteria.
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