[Yersinia pestis as a dangerous biological weapon]
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Sambor Grygorczuk1, Teresa Hermanowska-Szpakowicz
1Kliniki Chorób Zakaźnych i Neuroinfekcji Akademii Medycznej w Białymstoku.
Abstract:
Plague is an infectious disease caused by the Yersinia pestis microorganism, which is transmitted to the human host from a natural reservoir (different rodent species) by a flea bite. Plague is still encountered in humans in the areas of its enzootic prevalence in local rodent populations. Infection by flea bite results in a bubonic or septicemic plague, possibly complicated by secondary pneumonia. The person with pneumonic symptoms may be a source of a droplet-borne inhalatory infection for other people who consequently develop primary pneumonic plague. Despite a clinical form, plague is a severe infection characterized by a short incubation period, rapid onset and quick progress with mortality exceeding 50% if not treated properly. The pneumonic plague is associated with a particularly rapid progress and the mortality rate of almost 100% if not treated properly. As Yersinia pestis can be easily obtained and cultured and is highly pathogenic for humans, it poses a serious threat of being used for bioterrorism purposes. Artificially created aerosol containing plague bacilli can cause numerous and almost simultaneous cases of primary pulmonic plague in an exposed population. Persons exposed would most likely develop severe pneumonia with rapidly progressing respiratory and circulatory failure. The use of the Yersinia pestis strains resistant to antibiotics typically applied cannot be excluded.
Insights
Plague, a severe infectious disease caused by Yersinia pestis, is transmitted by fleas and can rapidly progress to fatal pneumonia. Bioterrorism using antibiotic-resistant strains poses a significant public health threat.
Area of Science:
- Infectious Diseases
- Microbiology
- Public Health
Background:
- Plague is a severe infectious disease caused by Yersinia pestis, primarily transmitted to humans from rodents via flea bites.
- It manifests in bubonic, septicemic, or pneumonic forms, with pneumonic plague being highly contagious and rapidly fatal.
- The bacterium's pathogenicity and ease of cultivation present a bioterrorism risk.
Purpose of the Study:
- To summarize the epidemiology, clinical presentation, and public health implications of plague.
- To highlight the severe and rapid progression of pneumonic plague.
- To underscore the potential threat of Yersinia pestis as a bioterrorism agent.
Main Methods:
- Literature review of plague epidemiology and clinical characteristics.
- Analysis of Yersinia pestis pathogenicity and transmission dynamics.
- Assessment of bioterrorism potential and public health risks.
Main Results:
- Plague remains a threat in enzootic areas, with high mortality rates if untreated (over 50% overall, nearly 100% for pneumonic).
- Pneumonic plague can spread person-to-person via respiratory droplets.
- Yersinia pestis is a viable bioterrorism agent, potentially causing widespread, severe pneumonia, possibly with antibiotic-resistant strains.
Conclusions:
- Plague is a critical public health concern requiring vigilance and preparedness.
- The potential for aerosolized Yersinia pestis necessitates robust biodefense strategies.
- The risk of antibiotic-resistant strains demands ongoing research into alternative treatments and diagnostics.
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