120 - AIIMS community medicine mcqs or social and preventive medicine mcqs ( spm or psm ) from all previous years AIIMS papers with answers - part 14

66q: all are true about malaria except ?

a. infant parasite index is a poor index for assessment of transmission of malaria in the community
b. vector for transmission is anopheles mosquito
c. newborns are resistant to P.falciparum infection
d. Anapheles culcifacies is common in rural area

 answer  a . anopheles stephensi is a vector in the urban areas and not rural areas

67q: all are true regarding case fatality rate except ?

a. represents killing power of disease
b. closely related to virulence
c. very useful for chronic diseases
d. may vary in different epidemics for same disease

 answer c. very useful for chornic diseases 

68q: true regarding Japanese encephalitis is all except ?

a. man to man transmission is not reported
b. culcine mosquito is zoophilc
c. mortality is 80-90 %
d. cases show tip of iceberg

 answer c . mortality is 80-90 % .

69q: true regarding pertussis is all except ?

a. infectivity is highest in paroxysmal state
b. cross immunity is not seen with bordetella parapertussis
c. chronic carrier state is not seen
d. secondary attack rate is 90 %

 answer a. infectivity is highest in paroxysmal state 

70q: all are organophosphorous poisons except ?

a. abate
b. bibenanone
c. propoxur
d. malathione

 answer  c . propoxur .