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Related Concept Videos

Infection01:20

Infection

When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
Reservoir of Infection01:30

Reservoir of Infection

Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
Transmission of Pathogens01:24

Transmission of Pathogens

Pathogens spread from their reservoirs to susceptible hosts through three main routes: contact transmission, vehicle transmission, and vector transmission. Each route involves distinct mechanisms of transfer.Contact TransmissionThis category includes direct contact, indirect contact, and droplet transmission:Direct contact involves immediate physical interaction between individuals—such as a handshake—which can spread pathogens like Streptococcus pyogenes, the bacterium responsible for...
Bacterial Signaling01:30

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
Inhalation Anthrax01:25

Inhalation Anthrax

Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...

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Related Experiment Video

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Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 3. Aerobiology
11:13

Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 3. Aerobiology

Published on: October 3, 2016

Risk of disease spread through bioterrorism.

R E Weller1

  • 1Biological Sciences Division, Pacific Northwest National Laboratories, P.O. Box 999, K9-81, Richland, Washington 99354, USA. Dick.Weller@pnl.gov

Veterinaria Italiana
|April 30, 2010
PubMed
Summary
This summary is machine-generated.

Bioterrorism poses a significant threat, especially to agriculture, due to the vulnerability of animals and plants to novel pathogens. Such attacks can lead to widespread disease outbreaks impacting both animal and human health.

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Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 3. Aerobiology
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Safety Precautions and Operating Procedures in an (A)BSL-4 Laboratory: 2. General Practices
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Area of Science:

  • Biosecurity
  • Veterinary Public Health
  • Infectious Disease Epidemiology

Background:

  • Bioterrorism is a recognized threat, though historically infrequent and small-scale.
  • Global connectivity and increased interspecies contact amplify the risk of infectious disease dissemination.
  • Pathogenic microbes are potential bioterrorism agents, with attacks mimicking natural outbreaks.

Purpose of the Study:

  • To highlight the unique vulnerabilities of the agricultural sector to bioterrorism.
  • To discuss the potential for zoonotic disease emergence following a bioterrorist attack.
  • To underscore the public health implications of agricultural bioterrorism.

Main Methods:

  • Review of existing literature on bioterrorism and infectious diseases.
  • Analysis of the agricultural sector's susceptibility to biological threats.
  • Examination of zoonotic disease transmission dynamics.

Main Results:

  • The agricultural sector lacks innate resistance and protection against foreign pathogens, making it highly vulnerable.
  • Animals and plants can serve as primary vectors, bypassing traditional weapon/delivery system concerns.
  • Bioterrorism agents, often zoonotic, can spread to wildlife, persist environmentally, and emerge as new human/animal diseases.

Conclusions:

  • Agricultural bioterrorism presents a substantial risk to animal health, human health, and ecosystem stability.
  • The potential for novel zoonotic disease emergence necessitates robust biosecurity measures.
  • Early detection and response strategies are critical to mitigate the impact of agricultural bioterrorism.