Technical Guidelines for Integrated Disease Surveillance ... - PHRplus

3.3.1 Review the updated charts, tables, graphs and maps 383.3.2 Compare the current situation with previous weeks, months, seasons 39and years3.3.3 Determine if thresholds for action have been reached 393.3.4 Summarise the analysis results 413.3.5 Compare this month’s achievement towards disease reduction targets 413.4 Use the analysis results to improve public health action 42Section 4: Investigate Reported Outbreaks and Other Public Health Events 434.1 Make a decision to investigate a reported outbreak 444.2 Record reported outbreaks and rumours 454.3 Verify the reported outbreak 454.4 Prepare to conduct an investigation 464.4.1 Specify roles of health and non-health staff 464.4.2 Define supervision and communication lines 464.4.3 Decide where the investigation will take place 464.4.4 Obtain the required authorizations 464.4.5 Finalise forms and methods for collecting information and specimens 464.4.6 Arrange logistical and financial support 474.4.7 Gather supplies for collecting lab specimens 474.5 Confirm the diagnosis 474.5.1 Review the clinical history 474.5.2 Collect laboratory specimens and obtain laboratory results 474.6 Isolate cases as needed and treat them 484.7 Search for additional cases 484.7.1 Search for cases in the health facility records 484.7.2 Search for cases in the community 484.8 Record information about the additional cases 494.8.1 Record information on a case-based reporting form 494.8.2 Record information about additional cases on a line list 494.9 Analyse data about the outbreak 494.9.1 Analyse data by time 504.9.2 Analyse data by place 504.9.3 Analyse data by person 514.10 Interpret analysis results 514.10.1 Interpret the time analysis results 514.10.2 Interpret the place analysis results 524.10.3 Interpret the person analysis results 524.10.4 Calculate case fatality rates 52ivTable of Contents