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Microscopy-based Assays for High-throughput Screening of Host Factors Involved in Brucella Infection of Hela Cells
Published on: August 5, 2016
[Bioterrorism with brucellosis]
Amélie Guihot1, Philippe Bossi, François Bricaire
1Service de maladies infectieuses et tropicales Hôpital Pitié-Salpêtrière, Paris (75).
Abstract:
A CONTAMINATING SPRAY: Brucellosis is a zoonosis due to a bacteria of the Brucella. B. melitensis species and is the principle agent of human brucellosis. The interest of Brucella as a biological weapon resides in the fact that transmission through a spray is possible, as has been reported with human contamination during abortion of infected animals or bacterial spraying in laboratories. The bacteria is highly contagious. It is suggested that 10 to 100 bacteria would be sufficient to produce a contaminating spray for humans. THE MENACE: In 1954, B. suis was the first infectious agent used as a biological weapon in the United States. Several other countries have been suspected of studying the agent as a biological weapon, but to date, no use of Brucella in a bioterrorist attack has been reported. THE EXTENT OF RISK: Brucella, and notably B. melitensis and B. suis, are considered as agents unlikely to be used as biological weapons: their incubation is long, the majority of infections are asymptomatic and mortality is low. However, the morbidity of this agent should not be underrated since it leads to chronic and disabling pathologies.
Insights
Brucellosis, a zoonotic disease caused by Brucella bacteria, can spread via contaminated spray. While unlikely as a bioweapon due to low mortality, it causes debilitating chronic illness.
Area of Science:
- Microbiology
- Infectious Diseases
- Bioterrorism Preparedness
Context:
- Brucellosis is a zoonotic disease primarily caused by Brucella melitensis.
- Brucella species can be transmitted through aerosolized bacteria, posing a risk in laboratory or agricultural settings.
- The potential for Brucella as a biological weapon has been recognized since the mid-20th century.
Purpose:
- To evaluate the potential of Brucella as a biological weapon.
- To assess the risks associated with Brucella transmission and pathogenicity.
- To inform biodefense strategies regarding Brucella.
Summary:
- Brucella bacteria can cause brucellosis, a zoonotic disease transmissible via contaminated spray.
- Low infectious doses (10-100 bacteria) may be sufficient for human infection.
- While Brucella species like B. melitensis and B. suis have low mortality rates and long incubation periods, they can lead to chronic and disabling conditions.
Impact:
- Brucellosis poses a significant public health concern due to its potential for widespread transmission and chronic debilitating effects.
- Understanding Brucella's characteristics is crucial for developing effective biodefense and public health countermeasures.
- The risk of Brucella as a biological weapon, though considered low, warrants continued surveillance and preparedness.
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