Listeriosis: A Serious Infection for Vulnerable Individuals
Understanding Listeria and Its Impact
Listeria is a genus of bacteria that can cause serious infections in humans. Until 1992, only 10 species of Listeria were recognized, each with two subspecies. However, subsequent research has identified a distinct group of six species, known as "Listeria sensu stricto," which share similar phenotypic characteristics.
Listeriosis: A Foodborne Illness
Listeriosis is a foodborne bacterial illness that can be particularly severe in vulnerable populations, including pregnant women, individuals over 65 years of age, and people with compromised immune systems. The most common source of Listeria infection is contaminated food, such as unpasteurized milk, soft cheeses, cold cuts, and deli meats.
Listeria monocytogenes: The Most Common Culprit
Listeria monocytogenes is the most common species of Listeria that causes infection in humans. It is a gram-positive, facultative intracellular rod bacteria that is catalase positive and beta-hemolytic when grown on blood.
Prevention and Treatment of Listeriosis
To prevent Listeria infections, it is essential to practice safe food handling and avoid consuming raw or undercooked foods that may be contaminated with Listeria. Individuals in at-risk groups should take extra precautions and consult with their healthcare providers.
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