Model-guided placement of decentralized diagnostics for spatial control of the 2026 Bundibugyo Ebola epidemic

Before 2026, Bundibugyo virus disease had only two recognized outbreaks. By August 2026, delayed recognition and multi-day sample transport in eastern Democratic Republic of the Congo had contributed to a large, spatially dispersed epidemic. We hypothesized that model-guided placement of decentralized diagnostics in frontier health zones could help contain spatial spread by acting as a spatial fence: delayed recognition would be converted into timely polymerase chain reaction (PCR) confirmation, isolation, and contact tracing before imported lineages became established. We fit a Bayesian spati

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