Article: Infectious Disease, Threats to Security

Infectious Disease, Threats to Security

BRIAN HOYLE

Infectious diseases are those diseases that are caused by microorganisms such as bacteria and viruses, many of which are spread from person to person. An intermittent host, or vector, aids the spread of some infectious diseases. One example is the transmission of the viral agent of Yellow Fever to humans via the bite of a mosquito. Other infectious diseases are spread directly from one person to another via infected body fluids or contaminated droplets in the air, as from a sneeze. Examples include influenza (aerosolized droplets) and hemorrhagic fevers such as Ebola (body fluids).

The scope of infectious diseases. Of ...

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