Archive · 3 Sep 2026
Congo Health Officials Use Mobile Data to Track Ebola Spread
Health workers are trying to predict where Ebola might spread next in Congo.
They are using information from mobile phones, but not the names or personal details of phone users.
When phones connect to different network towers, researchers can estimate how people travel.
This helps officials see which towns are connected to places where Ebola is already spreading.
The information drew attention to Kisangani, where officials increased preparations before the first cases were found.
It also showed possible connections to Kinshasa and nearby countries.
The data is not complete because it comes from only one phone company and does not fully show international travel.
Officials hope to get information from more phone companies to improve the estimates.
The World Health Organization and researchers are using anonymised mobile-phone data to map population movements during the Ebola outbreak in eastern Democratic Republic of Congo.
The outbreak has affected six provinces, with more than 6,250 infections and 3,039 deaths since it was declared on May 15, according to government data.
Swedish nonprofit Flowminder analyses aggregated records supplied by Vodacom to estimate travel between outbreak areas and other locations.
All 10 destinations receiving the largest traveller flows from the initial outbreak areas had reported confirmed Ebola cases by the end of June.
The method helped officials strengthen preparations in Kisangani, but coverage remains incomplete because it uses data from only one telecom operator and does not fully capture cross-border travel.
- Who
- The World Health Organization, Flowminder, Congolese health authorities, and telecommunications providers are involved.
- What
- Officials are using anonymised mobile-phone records to estimate population movements and identify places at risk of Ebola transmission.
- When
- The Ebola outbreak was declared on May 15; Flowminder published its first analysis in early June, with further analysis continuing through late June.
- Where
- The response focuses on eastern Democratic Republic of Congo, including Ituri, North Kivu, Kisangani, and possible connections to Kinshasa and neighbouring countries.
- Why
- The data is intended to help officials anticipate new infections and direct limited surveillance and response resources.
- Outbreak status
- More than 6,250 people had been infected and 3,039 killed, according to the latest government data cited.
- Geographic reach
- Cases had been confirmed in six provinces.
- Data provider
- Vodacom provides the mobile-network data free of charge.
- Data analyst
- Swedish nonprofit Flowminder produces the population-movement estimates.
- Privacy protection
- Flowminder says it receives aggregated, anonymised records without identifying individual subscribers.
- Kisangani risk
- Officials strengthened operations in Kisangani before the first cases were detected there.
- Kinshasa modelling
- A WHO modelling exercise estimated a 70% probability of detecting a case in Kinshasa by the end of September.
- Main limitation
- The analysis uses data from only one telecom operator and gives only a partial picture of international movements.