steps in outbreak investigation

Step 1

Establish the existence of an outbreak

Step 2

Confirm the diagnosis

Step 3

Define and identify cases

Step 4

Describe and orient the data in terms of time, place, and person

Step 5

Develop hypotheses

Step 6

Evaluate hypotheses (analytical epidemiology)

Step 7

Refine hypotheses and carry out additional studies

Step 8

Implement control and prevention measures

Step 9

Communicate findings

Step 10

Report writing, recommendations, ongoing surveillance