Which Of The Following Cause Infectious 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 are the 5 most common infectious diseases?

The 5 Most Common Infectious Diseases

  1. Hepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population.
  2. Malaria.
  3. Hepatitis C.
  4. Dengue.
  5. Tuberculosis.

Which one of the following is an infectious disease?

Infectious diseases are diseases caused by living organisms like viruses and bacteria. They can be passed from person to person through body secretions, insects or other means. Examples are SARS, influenza, the common cold, tuberculosis (TB), Hepatitis A and B.

What are the 4 types of infectious diseases?

Types of infection include bacterial, fungal, viral, protozoan, parasitic, and prion disease. They are classified by the type of organism causing the infection.

What are the sources of infection?

The organisms that cause infections are very diverse and can include things like viruses, bacteria, fungi, and parasites. You can acquire an infection in many different ways, such as directly from a person with an infection, via contaminated food or water, and even through the bite of an insect.

What is the nastiest disease?

The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed.

What are the 6 deadliest infectious diseases?

  • Deadliest Contagious Diseases By Death Toll.
  • Comparison point: As of Sept.
  • HIV/AIDS: 1.6 million deaths.
  • Tuberculosis: 1.3 million deaths.
  • Pneumonia: 1.1 million children under the age of 5.
  • Infectious Diarrhea: 760,000 children under the age of 5.
  • Malaria: 627,000 deaths.

What are 5 infectious?

So, without further ado, here are the five most common infectious diseases.

  1. Hepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population.
  2. Malaria.
  3. Hepatitis C.
  4. Dengue.
  5. Tuberculosis.

What are two examples of infectious?

Infectious diseases are diseases caused by living organisms like viruses and bacteria. They can be passed from person to person through body secretions, insects or other means. Examples are SARS, influenza, the common cold, tuberculosis (TB), Hepatitis A and B.

Are all diseases infectious?

Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. Some — but not all — infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious.

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