Outbreak investigations




Outbreak investigations


Evaluation of diagnostic tests

Sensitivity and specificity

Positive and negative predictive value

Test precision and accuracy

Epidemiological measurements

Incidence and prevalence

Relative and absolute risk

Odds ratio

Attributable risk (AR)

Mortality rates and case-fatality


Direct standardization

Indirect standardization

Study design

Study designs

Ecologic study

Cross sectional study

Case-control study

Cohort study

Randomized control trial

Clinical trials

Sample size

Placebo effect and masking

Causation, validity and bias

Disease causality

Selection bias

Information bias



Bias in interpreting results of clinical studies

Bias in performing clinical studies

Public health

Modes of infectious disease transmission

Outbreak investigations

Disease surveillance

Vaccination and herd immunity



Outbreak investigations


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High Yield Notes

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Outbreak investigations

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Outbreak investigations are efforts to identify and understand the cause of an outbreak of a disease. During an outbreak investigation, public health officials work to collect information about the outbreak, including how many people have been affected, where the outbreak is occurring, and any common exposures or risk factors among those affected.

The goal of an outbreak investigation is to determine the cause of the outbreak and to implement control measures to stop the spread of the disease. This may include identifying and treating those who are affected, implementing quarantine measures, and providing education to the public about how to prevent the spread of the disease. Outbreak investigations often involve collaboration among local, state, and federal agencies and may involve laboratory testing and other techniques to identify the cause of the outbreak.


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