Listeria monocytogenes 李斯特菌
Listeria is a gram positive, non-spore forming rod shaped bacteria. The genus contains a number of species but near all cases of Listeria infection are caused by Listeria monocytogenes.
L.monocytogenes is a type of bacteria often found in food and our environment. It can cause a rare but serious disease called listeriosis, especially among pregnant women, the elderly or individuals with a weakened immune system. In serious cases it can lead to brain infection and even death.
Listeria is common in soil, vegetation, water, sewage, and in the faeces of humans and animals. Vegetables and fruits can be contaminated if Listeria is present in the soil. Farm animals, appeared to be healthy, may carry Listeria and their meat or dairy products may be contaminated.
Unlike most of the other bacteria, Listeria can grow on foods being stored under refrigerated condition. For example, outbreak of Listeria in ice-cream has been reported in many countries.
Ref.: CFS, HONG KONG
Enviro Labs - HOKLAS Accredited Methods:
CHROMagar Listeria - Confirmation by CHROMagar Identification Listeria
CHROMagar Listeria Enumeration - Confirmation by CHROMagar Identification Listeria
李斯特菌是一種革蘭氏陽性，無芽孢形成桿形細菌。該屬包含了數種細菌，但幾乎所有食物中毒個案為單核細胞增多性李斯特菌 (Listeria monocytogenes) 造成。
李斯特菌是一種通常存在於食品和環境的細菌。它可以導致一種罕見但嚴重的疾病稱為李斯特菌病，孕婦、老人或低免疫力人士較易感染。在嚴重的情況下，它可導致腦部感染，甚至死亡。
李斯特菌是常見於土壤、植被、水、污水、糞便和在人類和動物。如果是存在於土壤中，蔬菜和水也可以受李斯特菌污染。農場動物，似乎是健康的，可攜帶李斯特菌及其肉類或乳製品可能受到污染。
與大多數其他細菌不同，李斯特菌可以生長在冷藏食物。例如，許多國家均有報導李斯特菌在冰淇淋爆發。
環境化驗有限公司（ELL）使用國際認可的方法來檢測李斯特菌。請致電 26762983 或 電郵 info@envirolabs.com.hk 查詢服務詳情。
參考資料: 香港食物安全中心
環境化驗 HOKLAS 認可方法:
CHROMagar Listeria - Confirmation by CHROMagar Identification Listeria
CHROMagar Listeria Enumeration - Confirmation by CHROMagar Identification Listeria