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How does contact tracing help stop an Ebola outbreak?
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Ebola
Numerous filamentous ebolavirus particles (blue) budding from a chronically-infected VERO E6 cell (yellow-green) in this digitally colorized scanning electron micrograph produced by the U.S. National Institute of Allergy and Infectious Diseases (NIAID).
Contact tracing is a vital public health strategy used to control the spread of Ebola by identifying, notifying, and monitoring individuals who may have been exposed to the virus through close contact with an infected person.12
During an outbreak, health workers perform the following steps to break chains of transmission:
- Identification and Monitoring: Once a case is confirmed, contact tracers retrace the patient's recent steps to identify everyone they may have encountered. These individuals are then tracked and monitored for 21 days to detect any signs of infection early.13
- Isolation: By identifying exposed individuals before they become symptomatic or spread the virus further, authorities can ensure they receive prompt care and are isolated from the community.34
- Rapid Response: Early detection through contact tracing allows health officials to intervene quickly, which is essential for preventing the wider regional or international spread of the disease.32
This process, combined with patient isolation, safe burials, and community education, forms a disciplined approach that is critical to stopping an outbreak.32