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How does population affect the spread of disease?

How does population affect the spread of disease?

Fertility, migration and urbanization affect the spread of diseases including tuberculosis, malaria and HIV/AIDS. Increased population densities and unhealthy living conditions in urban slums can ease the transmission of infections. Migration may also increase vulnerability to disease.

How does population density affect the population?

Density-dependant factors may influence the size of the population by changes in reproduction or survival. This in turn led to a decrease in per capita birth rate, a limitation in population growth as a function of population density. Density dependant factors may also affect population mortality and migration.

What factors affect the spread of disease?

Responsible factors include ecological changes, such as those due to agricultural or economic development or to anomalies in climate; human demographic changes and behavior; travel and commerce; technology and industry; microbial adaptation and change; and breakdown of public health measures.

What happens when population density increases?

When a population reaches a high density, there are more individuals trying to use the same quantity of resources. This can lead to competition for food, water, shelter, mates, light, and other resources needed for survival and reproduction.

What is the importance of population density?

Population density is the concentration of individuals within a species in a specific geographic locale. Population density data can be used to quantify demographic information and to assess relationships with ecosystems, human health, and infrastructure.

What are 2 factors that affect climate?

Factors that Influence Climate

  • Elevation or Altitude effect climate. Normally, climatic conditions become colder as altitude increases.
  • Prevailing global wind patterns.
  • Topography.
  • Effects of Geography.
  • Surface of the Earth.
  • Climate change over time.

    What are the 3 factors that cause disease?

    Infectious diseases can be caused by:

    • Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
    • Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
    • Fungi.
    • Parasites.

    What are the 5 modes of transmission?

    The modes (means) of transmission are: Contact (direct and/or indirect), Droplet, Airborne, Vector and Common Vehicle. The portal of entry is the means by which the infectious microorganisms gains access into the new host.

    What are the 8 modes of transmission?

    Modes of transmission

    • Direct. Direct contact. Droplet spread.
    • Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)

      What are the main causes of disease?

      Causes

      • Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
      • Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
      • Fungi.
      • Parasites.