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By Tzar Oluigbo | July 2, 2026

Why Zambia is Rethinking Tuberculosis Testing, and Why Validation Must Come First

Inside a small laboratory at the University Teaching Hospital in Lusaka, the capital of Zambia, a technician splits a sputum sample in two. Half goes into a GeneXpert machine, the workhorse of tuberculosis (TB) diagnosis in Zambia. The other half goes into a near-point-of-care molecular device, small enough to sit beside a phone, powered by […]

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