Surveillance can tell us the trend of influenza in South Carolina, but it cannot tell us exactly how many cases of influenza there are in the state. This is because not everyone who gets the influenza goes to the doctor to get tested and we have no way of monitoring these unreported cases of flu.
The format of Flu Watch, the weekly summary of influenza activity in South Carolina has been revised. The data collected, data collection methods, and data analyses have not changed but new graphs and tables are included to simplify viewing and comparing influenza surveillance data. Definitions and descriptions of the South Carolina influenza surveillance components are provided in a separate document below.
Read the complete Flu
Watch: South Carolina's
Weekly Surveillance Report - (PDF):
Updated March 21, 2018
Visit the Center for Disease Control and Prevention's (CDC) website for national statistics on flu.
Visit the World Health Organization's (WHO) website for global flu activity updates.
Each year, DHEC and U.S. public health experts monitor influenza (flu) and other diseases. This activity is called disease surveillance.
Influenza (flu) surveillance allows DHEC and the CDC to see what impact flu is having on the health of residents. Surveillance helps us to:
In South Carolina, influenza surveillance consists of several components. Each component provides different types of information about influenza; together, they create a solid overview of influenza activity in the state.