Cambridge (CIE) AS Biology Your notes
Infectious Diseases
Contents
Infectious Diseases
Transmission of Disease
Prevention & Control of Disease
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, Infectious Diseases
Your notes
Infectious Diseases
A disease is an illness or disorder of the body or mind that leads to poor health
Infectious diseases are caused by pathogens and are transmissible, meaning that they
can be spread between individuals within a population
Term Definition Example
Infectious, or Diseases caused by pathogens that can be Cholera
communicable, transmitted from infected to uninfected
disease people. Tuberculosis
(TB)
Some can transmit from animals to people,
or people to animals Malaria
HIV/AIDS
Non-infectious Diseases that are not caused by Lung cancer
disease pathogens, but that may instead be
inherited, or related to lifestyle factors or Sickle cell
life events disease
Depression
Coronary heart
disease
Common Pathogens & Their Diseases
Examples of infectious diseases of worldwide importance are
Cholera
Malaria
Tuberculosis (TB)
HIV/ AIDS
The number of people infected with these diseases across the world remains very high,
and they pose serious public health problems
These diseases are all caused by pathogens; understanding the pathogen and its
method of transmission are important in reducing the spread of disease
Disease Pathogen Type of
organism
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Infectious Diseases
Contents
Infectious Diseases
Transmission of Disease
Prevention & Control of Disease
© 2025 Save My Exams, Ltd. Get more and ace your exams at savemyexams.com 1
, Infectious Diseases
Your notes
Infectious Diseases
A disease is an illness or disorder of the body or mind that leads to poor health
Infectious diseases are caused by pathogens and are transmissible, meaning that they
can be spread between individuals within a population
Term Definition Example
Infectious, or Diseases caused by pathogens that can be Cholera
communicable, transmitted from infected to uninfected
disease people. Tuberculosis
(TB)
Some can transmit from animals to people,
or people to animals Malaria
HIV/AIDS
Non-infectious Diseases that are not caused by Lung cancer
disease pathogens, but that may instead be
inherited, or related to lifestyle factors or Sickle cell
life events disease
Depression
Coronary heart
disease
Common Pathogens & Their Diseases
Examples of infectious diseases of worldwide importance are
Cholera
Malaria
Tuberculosis (TB)
HIV/ AIDS
The number of people infected with these diseases across the world remains very high,
and they pose serious public health problems
These diseases are all caused by pathogens; understanding the pathogen and its
method of transmission are important in reducing the spread of disease
Disease Pathogen Type of
organism
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