A Case control

B Prospective coho

C Longitudinal study

D Ambispective

A Seasonal

B Cyclical

C Periodical

D Secular

A Randomization

B Random Selection

C Matching

D Blinding

A Not given for infants less than 6 months

B Two primary doses given to children in the one to three year age group

C Booster doses are given after I year and repeated every 3 years

D In endemic areas vaccination is given to cover children between one to nine years age group.

A Injury prevention

B Communicable diseases

C Maternal and child moality

D Hypeensive disorders

A Increased sensitivity and decreased specificity

B Increased specificity and decreased sensitivity

C Increased sensitivity and increased specificity

D Decreased sensitivity and decreased specificity

A 81-89

B 80-90

C 75-95

D 70-100

A 7.32

B 8.64

C 6.68

D 8.96

A Secondary attack rate 5 to 15%

B Virus shedding present before the pt presents with symptoms

C 1 to 5 years is high risk age group

D Aquatic birds are reservoirs

A 36

B 15

C 90

D 56