Q.1 What is the difference between epidemiology of 19th century and 21st century?
Answer:Epidemiology of 19th century:
*Virulent, highly contagious
microorganisms – measles, yellow fever, smallpox, typhoid, cholera
*Prototypical for public health
*widespread impact
*Inherently social (external
threat)Expanding
beyond the original rationale
*Non-contagious diseases
*Indirect societal involvement
*Mass disease
*Opportunity for prevention
Epidemiology of 21st century:•Infectious diseases – tuberculosis
•Deficiency diseases – pellagra (niacin deficiency)
•Chronic diseases – CVD, cancer
•Psychiatric disorder – schizophrenia, depression
•Injury – motor vehicle crashes, suicide, homicide
•Pharmaceuticals – efficacy and adverse effects
•Personal behavior – noncompliance with medical treatment regimens,
smoking, alcohol, exercise
Q.2 What do you mean by epidemiology of behavior?
Answer:A
behavioral epidemiology framework is proposed to specify a systematic sequence of studies on health-related behaviors, leading to evidence-based interventions directed at populations.