ICSE Class 9 Answered
(a) How are diseases classified on the basis of extent of occurrence?
(b) What are pandemic and sporadic diseases?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(a) Classification of diseases on the basis of extent of occurrence:
(1) Endemic diseases
(2) Epidemic diseases
(3) Pandemic diseases
(4) Sporadic diseases
(b)
Pandemic disease: When the occurrence of the disease is worldwide, it is known as a pandemic disease. E.g. AIDS.
Sporadic disease: The disease occurring in single, scattered cases is known as a sporadic disease. E.g. Malaria, Cholera.
Answered by | 04 Jun, 2014, 03:23: PM
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