Page 6 - 2- Lesson Notes- Health and its failure; Disease and its causes

Transmission of infection occurs through direct Transmission is absent, However hereditary
contact or some medium (air, water, vectors). diseases are transmitted from parent to
offspring.

Community hygiene can reduce the incidence Community hygiene is ineffective in reducing

of infectious diseases the incidence of non-infectious diseases.
Example: Cholera, Tuberculosis (TB), Example: High blood pressure, Heart,
Pneumonia, Chickenpox. disease, Cancer.