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Infectious diseases are diseases caused by organisms known as
pathogens
An example of a non-infectious disease is
cardiovascular disease
People who spread a pathogen even though they do not have the disease
carrier
What is the causative agent (pathogen) responsible for cholera
Vibrio cholerae
Malaria is caused by four species of Plasmodium. What type of organism is plasmodium?
protoctisst
What is the causative agent of HIV/AIDS?
HIV (human immunodeficiency virus)
smallpox is the first and only virus to be
eradicated
What are the methods of transmission of Vibrio cholerae?
food-borne, water borne
What are the main symptoms of cholera?
severe diarrhoea, dehydration
How is cholera treated?
oral rehydration therapy
How can cholera be prevented?
sewage treatment and chlorination of drinking water
Name the insect vector of malaria
female Anopheles mosquito (uses the protein in blood to develop eggs)
Where is malaria found?
tropics and subtropics (endemic in 106 countries!)
Name a site of action of Plasmodium
red blood cells
What happens to people continually re-infected by different strains of malaria
They become immune
How can malaria be prevented?
reduce the number of mosquitoes
