Geography Revision Infectious disease It is a disease that can be passed from one person or animal to another through contact, usually by food, water, air or vector. Over 90% of all deaths caused by infectious diseases are caused by a small number of them including pneumonia, malaria, HIV/AIDS, diarrhoeal diseases, tuberculosis and measles. Epidemiology: • The area of medical studies that examines the frequency, possible sources and prevalence of infectious diseases in communities…
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