• A disease is an?illness or disorder?of the?body or mind?that leads to?poor health
• Each disease is associated with a set of?signs and symptoms
• Infectious diseases are caused by?pathogens?and are transmissible (can be spread between individuals within a population)

Infectious & non-infectious disease table

• Four infectious diseases of worldwide importance are:?cholera, malaria, tuberculosis (TB) and HIV/ AIDS
• Worldwide the number of people infected with these diseases remains?very high?and these diseases pose?serious public health problems?now and for the foreseeable future
• To control a disease, it is very important to know what causes it (known as the?causative agent?or?pathogen)

Common pathogens & their diseases table