A biological sample is only as valuable as the condition it’s in when it reaches the laboratory.
From collection at a health facility to laboratory testing, samples must be properly packaged, kept within the required temperature range and handled safely. Delays, heat exposure or poor documentation can compromise a sample, postpone a diagnosis and slow an outbreak response.
In Côte d’Ivoire’s Nawa health region, delays and handling challenges have sometimes caused samples to arrive late or in poor condition at the national reference laboratory. A coordinated effort involving health authorities, laboratory and postal partners, VillageReach and Tec4Med is now strengthening the journey from rural health centers to the Pasteur Institute of Côte d’Ivoire in Abidjan.
Delays on the Road to the Laboratory
Nawa is a largely rural region in southwestern Côte d’Ivoire, comprising the health districts of Buyo, Guéyo, Méagui and Soubré. Samples collected at these facilities travel through several handoffs before reaching the Pasteur Institute of Côte d’Ivoire in Adiopodoumé, Abidjan, which serves as the country’s national public health laboratory.
Before the intervention, the system faced three key challenges: Samples did not consistently reach the laboratory within the required 72 hours, cold-chain disruptions were reported in Buyo, Méagui and Soubré and health teams had little visibility once samples were handed over to La Poste Côte d’Ivoire. That meant health workers could not easily determine where a delay occurred or whether a sample had been exposed to conditions that could affect its quality.
Connecting People, Processes and Technology
Regional health leaders brought together the Ministry of Health, the Coordination Directorate of the Expanded Program on Immunization, the Pasteur Institute, La Poste Côte d’Ivoire, VillageReach and district health authorities to strengthen the system through a coordinated approach rather than a series of isolated efforts.
From July 6 to 8, 2026, epidemiological surveillance stakeholders met in Soubré for a review and refresher workshop. Health personnel, postal operators and laboratory specialists reviewed triple packaging, biosafety and cold-chain procedures. Follow-up mentoring visits to health facilities, including Gbakalekpa, Baléyo and Gripazo, helped staff apply those standards in their daily work. Each team developed an action plan to improve traceability, reporting and documentation.
Partners also improved coordination with La Poste Côte d’Ivoire to ensure empty vaccine carriers and transport kits are returned to rural facilities. This helps health workers maintain a steady flow of sample shipments without interruptions caused by equipment shortages.
Finally, teams placed Tec4Med smart sensors inside vaccine carriers and transport boxes. The sensors record temperature, humidity, light exposure and shocks, providing a traceable record of the journey and alerts when conditions require attention.
“Before Tec4Med, tracking was limited after samples were dropped off at La Poste and until they arrived at the laboratory,” said Kouadio Amenan Sidonie, a state-registered nurse at Soubré Health District. “Now, our dashboard provides real-time visibility into temperature, light exposure, shocks and the exact route. If an anomaly occurs, automated alerts notify the team immediately.”
Results
Early monitoring points to encouraging progress, though the indicators below measure different aspects of performance and should not be compared directly.
- Baseline transport compliance: Before the coordinated improvements, only 2% of sample shipments met project transport requirements, according to baseline monitoring.
- Timely arrival: In the first half of 2026, 17% of samples reached the reference laboratory within the required three-day window, highlighting both progress and the need for continued improvement.
- Sample quality: During a recent Tec4Med-monitored transport phase, 40 of 41 samples, or 95%, arrived at the laboratory in acceptable condition.
The one sample that arrived in inadequate condition demonstrated the value of real-time visibility. A cooler sent from Guéyo was left at the Gagnoa post office after being mistaken for another shipment. Sensor data recorded light exposure between 7 p.m. and 4 a.m., allowing teams to pinpoint the handling error and adjust procedures to prevent similar incidents.
“Since the integrated training with all partners, including La Poste Côte d’Ivoire, the one- to three-day transport window is respected, temperatures remain stable and vaccine carriers are regularly returned,” said Élodie Gone, an epidemiological surveillance officer for Méagui health district. “Samples arrive in good condition in Abidjan, results are available in less than a week and our collection supplies remain stocked.”
A Stronger Foundation for Faster Disease Detection and Response
Reliable sample transport strengthens the entire disease surveillance system. When samples arrive on time and in good condition, laboratories can produce reliable results sooner. Health authorities can respond more quickly to investigate suspected cases, protect communities and provide patients with timely, reliable results.
“Securing the sample’s journey is essential,” said Andréa Zadi, IT lead at VillageReach Côte d’Ivoire. “Behind every sample transported, there is a patient waiting for a reliable result. Securing this journey directly contributes to improving the quality of care.”
The Nawa experience provides an encouraging foundation for continued improvement across the region. Sustaining progress will require partners to keep monitoring delivery times, transport conditions, documentation and completion of district action plans. Together, these steps can help Côte d’Ivoire detect disease threats earlier and respond more effectively.