What are the 4 types of disease agents?

What are the 4 types of disease agents?

The four different categories of infectious agents are bacteria, viruses, fungi, and parasites.

What are the 6 agents of disease?

A brief review of the general characteristics of each of these agents and examples of some diseases they cause follows.

  • Bacteria.
  • Viruses.
  • Fungi.
  • Protozoa.
  • Helminths.
  • Prions.

What are 5 examples of diseases?

Common Infectious Diseases

  • Chickenpox.
  • Common cold.
  • Diphtheria.
  • E. coli.
  • Giardiasis.
  • HIV/AIDS.
  • Infectious mononucleosis.
  • Influenza (flu)

What are the 3 types of causative agents for diseases?

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 is the causative agent?

Causative agents in infection are pathogens. Pathogens are micro-organisms that are capable of causing diseases or infections. If micro-organisms from a person’s own body cause an infection, it is called an endogenous infection.

What are disease agents?

Infectious agents are organisms that are capable of producing infection or infectious disease. They include bacteria, fungi, viruses, and parasites.

What are the five causative agents?

The agents that cause disease fall into five groups: viruses, bacteria, fungi, protozoa, and helminths (worms).

What are the 10 common diseases?

Common Illnesses

  • Allergies.
  • Colds and Flu.
  • Conjunctivitis (“pink eye“)
  • Diarrhea.
  • Headaches.
  • Mononucleosis.
  • Stomach Aches.

What are the causes of diseases?

What are the 5 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.

What are the all causative agents?

What are the agents of disease?

(i) Biological Agent: These are the living agents who include bacteria,fungi,parasites,protozoa and viruses etc.

  • (ii) Physical Agents: Exposure to excessive heat,cold,pressure,radiations,humidity and electricity etc.
  • (iii) Chemical Agents: (a) Exogenic agents i.e.
  • What are the five types of infectious agents?

    Viral infections. Viral infections occur due to infection with a virus.

  • Bacterial infections. Bacteria are single-celled microorganisms,also known as prokaryotes.
  • Fungal infections. A fungus is often a multicellular parasite that can decompose and absorb organic matter using an enzyme.
  • Prion disease.
  • Other infections.
  • What is an agent that causes disease?

    Agent originally referred to an infectious microorganism or pathogen: a virus, bacterium, parasite, or other microbe. Generally, the agent must be present for disease to occur; however, presence of that agent alone is not always sufficient to cause disease.

    What are disease – causing agents called?

    disease. some are caused by agents such as bacteria, viruses, and fungi. others are caused by materials in the environment, and other are inherited. disease causing agents are called pathogens, literally meaning “sickness-markers”. examples of disease.