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Related Concept Videos

Cholera01:25

Cholera

130
Cholera is an acute gastrointestinal disease caused by the Gram-negative bacterium Vibrio cholerae. It is transmitted primarily via the fecal-oral route through the ingestion of contaminated water or food.Vibrio cholerae is a motile, Gram-negative bacterium of the family Vibrionaceae, primarily associated with waterborne outbreaks in areas with inadequate sanitation. Although over 200 serogroups of V. cholerae exist, only O1 and O139 are responsible for epidemic cholera. The O1 serogroup,...
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Reservoir of Infection01:30

Reservoir of Infection

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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,...
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Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Steps in Outbreak Investigation01:18

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In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
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Bacterial Gastroenteritis01:18

Bacterial Gastroenteritis

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Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...
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Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

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Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable...
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Related Experiment Video

Updated: Apr 22, 2026

Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
07:58

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Evolving behavioral dynamics and environmental risk in cholera epidemics.

Hanae El Ouardani1, Mohammad Sharif Ullah2, Zakaria El Allali3

  • 1Department of Mathematics, Multidisciplinary Faculty of Nador, Mohammed Premier University, Oujda, 60000, Morocco; Department of Mathematics, University of Tennessee at Chattanooga, Chattanooga, TN-37403, USA.

Mathematical Biosciences
|April 20, 2026
PubMed
Summary

Cholera outbreaks are driven by environmental factors and human behavior. Implementing preventive measures, vaccination, and treatment effectively reduces disease burden and seasonal peaks.

Keywords:
Behavioral dynamicsEnvironmental factorsSeasonalitySocial reward

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Area of Science:

  • Epidemiology
  • Mathematical Modeling
  • Public Health

Background:

  • Cholera remains a significant public health threat in low- and middle-income countries, exacerbated by poor water/sanitation and climate variability.
  • Understanding the complex interplay between environmental factors and human behavior is crucial for managing cholera outbreaks.
  • Seasonal variations in temperature and hydrology influence bacterial survival and transmission dynamics.

Purpose of the Study:

  • To develop and analyze a mathematical model of cholera transmission incorporating environmental factors and human behavior.
  • To investigate how seasonal changes and human decision-making impact cholera outbreak dynamics.
  • To identify effective strategies for cholera control in seasonal contexts.

Main Methods:

  • A seasonally driven mathematical model was developed, integrating an aquatic bacterial reservoir, temperature, and hydrological conditions.
  • Human behavior was modeled using an evolutionary game-theoretic (EGT) framework, reflecting adaptive strategies for prevention and treatment.
  • The model analyzed the interaction between environmental transmission and behavioral responses to assess disease burden.

Main Results:

  • The study demonstrates that environmental factors and human behavior significantly alter the magnitude, duration, and timing of cholera outbreaks.
  • Rapid and widespread implementation of preventive measures, alongside moderate vaccination and timely treatment, effectively reduces average incidence and peak outbreak size.
  • High prevention costs or poor risk perception can sustain high disease burden despite available treatments.

Conclusions:

  • Efficient cholera control requires integrated strategies addressing water/sanitation infrastructure, alongside policies promoting individual and community well-being.
  • Subsidies for water treatment, targeted risk communication, and behaviorally informed vaccination strategies are recommended.
  • The findings offer insights for policymakers to develop comprehensive plans for controlling cholera and other water-borne diseases.