Epidemiological Surveillance Headlines What is surveillance different from

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ﺍﻟﺘﺮﺻﺪ ﺍﻟﻮﺑﺎﺋﻲ Epidemiological Surveillance

ﺍﻟﺘﺮﺻﺪ ﺍﻟﻮﺑﺎﺋﻲ Epidemiological Surveillance

Headlines • What is surveillance ? different from investigation, surveys ? • What are

Headlines • What is surveillance ? different from investigation, surveys ? • What are the objectives of surveillance ? • What are the steps of surveillance ? • What are the types of surveillance ? • What are the methods of data collection ? • What are the steps of outbreak investigation ?

Definition of Surveillance • Ongoing systematic collection, analysis and interpretation of outcome-specific data for

Definition of Surveillance • Ongoing systematic collection, analysis and interpretation of outcome-specific data for use in planning, implementation and evaluation of public health practice • ﺍﻟﺠﻤﻊ ﺍﻟﻤﻨﻈﻢ ﺍﻟﻤﺴﺘﻤﺮ ﻭﺗﺤﻠﻴﻞ ﻭﺗﻔﺴﻴﺮﺑﻴﺎﻧﺎ ﻟﻺﺳﺘﻌﻤﺎ ﻓﻲ ﺗﺨﻄﻴﻂ ﻭﺗﻄﺒﻴ ﻭﺗﻘﻴﻴ ﻣﻤﺎﺭﺳﺎﺕ ﺍﻟﺼﺤﺔ ﺍﻟﻌﺎﻣ

Objectives of Surveillance • Identify diseases of public health importance • Forecast any outbreak,

Objectives of Surveillance • Identify diseases of public health importance • Forecast any outbreak, epidemic or unusual event • Identify risk factors • Identify high risk populations • Monitor disease trends • Assess current disease control activities

Steps for Surveillance • • Defining the problem Collecting data Entering / processing data

Steps for Surveillance • • Defining the problem Collecting data Entering / processing data Interpreting data Reporting results Using results to plan interventions Evaluating the surveillance system Updating the system 21 April, 2008 Injury Surveillance

Sensor (Reporters) Controller Error Signal (Decision maker) (Monitor output) COMPONENTS OF A SURVEILLANCE SYSTEM

Sensor (Reporters) Controller Error Signal (Decision maker) (Monitor output) COMPONENTS OF A SURVEILLANCE SYSTEM Reference Signal (Sensor output) Monitor Expectations

Types of Surveillance • Passive • Active • Enhanced

Types of Surveillance • Passive • Active • Enhanced

Data Collection Methods • • Routine reporting system Sentinel reporting system Surveys and special

Data Collection Methods • • Routine reporting system Sentinel reporting system Surveys and special studies Outbreak investigation

Outbreak Investigation • Estimation of the magnitude, source, and prevention of similar outbreaks in

Outbreak Investigation • Estimation of the magnitude, source, and prevention of similar outbreaks in the future ﻭﻣﻨﻊ ﺣﺎﻻﺕ ﺍﻟﺘﻔﻱ ﺍﻟﻤﻤﺎﺛﻠ ﻓﻲ ﺍﻟﻤﺴﺘﻘﺒ ، ﻣﺼﺪﺭ ، • ﺗﻘﺪﻳﺮ ﺣﺠ

Steps of Outbreak Investigation Ø Ø Ø Ø Ø Confirm the existence of epidemic

Steps of Outbreak Investigation Ø Ø Ø Ø Ø Confirm the existence of epidemic Verify the diagnosis Orient data in terms of person, place & time Choose a study design Collect specimens for lab analysis Conduct environmental investigations Formulate & test hypotheses Implement control measures Conduct additional studies Prepare a written report, communicate findings

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