Public Health Surveillance

Skill targeted: Identifying Trends

EIS officers knocking on door in neighborhood

Data are collected regularly to help CDC understand how diseases are spreading throughout the United States and around the world. Disease detectives review this data and try to identify patterns. These patterns tells CDC when and where an outbreak may be happening so they can send resources to control its spread. This regular collection of data, or surveillance, can also provide insight on when and where to send resources to prevent disease from spreading in the first place.

This section focuses on basic data collection and how to categorize data by person, place, and time using a variety of graphs and figures.

Students will learn how to:

Describe how to collect reliable data
Analyze data to determine magnitude, trends, and patterns of a novel disease process or public health concern
Define cases, severity, and impact of a disease
Assess the strengths and weaknesses of various types of surveillance systems

For background information, please review CDC’s Principles of Epidemiology, 3rd Edition Lesson 3: Measures of Risk, Lesson 4: Displaying Public Health Data, and Lesson 5: Public Health Surveillance

Activities

Page last reviewed: August 25, 2021

Content source: Deputy Director for Public Health Science and Surveillance, Center for Surveillance, Epidemiology, and Laboratory Services, Division of Scientific Education and Professional Development