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Listeria monocytogenes: a foodborne pathogen
1Bureau of Microbial Hazards, Department of National Health and Welfare, Tunney's Pasture, Ottawa, Ont.
Summary
Listeriosis, a serious foodborne illness caused by Listeria monocytogenes, is rising globally. Early recognition and ampicillin treatment are crucial for high-risk individuals, especially when a food source is suspected.
Area of Science:
- Foodborne Illness
- Infectious Diseases
- Public Health
Background:
- Listeriosis, caused by Listeria monocytogenes, is a growing global health concern.
- Outbreaks, like the one in California linked to soft cheese, highlight the disease's severity, with high fatality rates.
- Listeria monocytogenes contamination is found in diverse food products, including dairy, produce, fish, and meat.
Purpose of the Study:
- To review the increasing incidence and characteristics of listeriosis.
- To emphasize the importance of early diagnosis and treatment strategies.
- To highlight the risks associated with Listeria monocytogenes in the food industry.
Main Methods:
- Review of epidemiological data and clinical manifestations of listeriosis.
- Analysis of risk factors and vulnerable populations.
- Discussion of diagnostic and therapeutic approaches.
Main Results:
- Listeriosis incidence is increasing worldwide, posing a significant threat to the food industry.
- The pathogen, Listeria monocytogenes, exhibits heat resistance and can proliferate in refrigerated foods.
- High-risk groups include immunocompromised individuals, pregnant women, and their fetuses, with severe outcomes like meningitis, septicemia, and fetal death.
Conclusions:
- Early recognition of listeriosis is critical for effective treatment, with ampicillin being the preferred antibiotic.
- Listeriosis should be suspected in febrile patients with neurological symptoms and in women experiencing pregnancy complications.
- Foodborne sources must be considered prime suspects in all listeriosis cases and outbreaks.