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What is the most important test to assess the prevalence of tuberculosis infection in a community?
In a normal curve, the area between one standard deviation on either side of the mean will include:
Match List-I with List-II and select the correct answer using the code given below the Lists:

Which of the following insecticides is not used as a larvicide?
An outbreak of Viral Hepatitis was reported from a town between June and August of a particular year. 60% of cases occurred in July. Exposure of the community to infection is from:
Which one of the following indicators is not included in Millennium Development Goals?
Severity of a disease is measured by:
‘Spot map’ in epidemiological studies refer to variation in the distribution of a disease at:
Specificity of a test is =
With reference to historical cohort study, which of the following statements is not correct?