Infectious Diseases

Here is information on some types of common infectious diseases you should be familiar with and how they are spread.

Infectious diseases

What are infectious Diseases?

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. 

How are infectious Diseases commonly spread?

  • Person-to-person contact through skin wounds.
  • Droplets in the air e.g. when an infected person coughs or sneezes
  • Food and drink contaminated by stools or urine
  • Insects, via their bites or direct infection

Severe Acute Respiratory Syndrome (SARS) 

Commonly spread by: direct contact with respiratory secretions and body fluids of a person with SARS.

Influenza

Commonly spread by: inhaling respiratory droplets containing the flu virus.

Hand, Foot and Mouth Disease



 

Commonly spread by: contact with an infected person's nasal or throat discharges or stools. 

Dengue 

Commonly spread by: bites from an infected mosquito.

Hepatitis A

Commonly spread by: consuming contaminated food, such as raw or partially-cooked shellfish.

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