About GDD Operations Center

What We Do

The Global Disease Detection (GDD) Operations Center serves as CDC’s program dedicated to detecting and monitoring global public health events of international importance using event-based surveillance (EBS). Event-based public health surveillance looks at reports, stories, rumors, and other information about health events that could be a serious risk to public health.1

How We Do It

The GDD Operations Center scans multiple sources of information about disease events, including media and the internet, for key words in over 50 languages. GDD Operations Center staff review both official information sources (such as reports from ministries of health or WHO) and unofficial media reports. All unofficial reports are verified through a global network of public health professionals and reviewed for signs of emerging threats to the public’s health.

The GDD Operations Center monitors around 30-40 reported public health events each day, with particular emphasis on CDC’s current or potential outbreak and emergency responses.2

Why It's Important

Verification is key to determining whether a public health event is truly occurring. Through rapid information gathering, prompt verification, and timely dissemination of information, the GDDOC ensures that CDC is always prepared to respond. CDC response teams can deploy internationally within 24 hours of learning about an outbreak.

Where We Work

The GDD Operations Center, situated within CDC’s Emergency Operations Center (EOC), partners with several institutions and agencies within the US and internationally to exchange information. Information sharing is built on trust and an understanding of how to appropriately handle information, particularly when it is not yet public.1 International partners and collaborators include but are not limited to agencies affiliated with WHO and the UN, collaborating countries’ ministries of health and agriculture, humanitarian organizations, and animal health organizations.

Because of its partnerships, the GDD Operations Center is often the first to alert CDC staff about an international outbreak, natural disaster, or other public health event – whether biological, chemical or radiological. The GDD Operations Center staff collaborates with experts from across CDC, providing a strong foundation to report the most accurate and timely information about an event and the risk it poses to public health.

If assistance is requested by the country or region experiencing an outbreak, information is exchanged to identify and confirm outbreaks, gather epidemiologic information, and launch joint responses. The GDD Operations Center participates in the Biosurveillance Indications and Warning Analytic Community (BIWAC), a US government interagency collaboration that exchanges information through an online portal to verify the earliest signals of a potential threat. GDD Operations Center is also the CDC liaison for WHO’s Global Alert and Response Network (GOARN), detecting, assessing and verifying events and responding to requests for international assistance to control disease outbreaks.3

GEARS Fact Sheet

Learn more about DGHP’s Global Disease Detection Operations Center through the Global Emergency Alert and Response Services (GEARS) Fact Sheet.