Volume 31, Number 8—August 2025
Perspective
A Roadmap of Primary Pandemic Prevention Through Spillover Investigation
Figure 1

Figure 1. A visual guide to One Health investigations of spillovers to assist with primary pandemic prevention. One Health investigations trace spillover events backward from detection, systematically uncovering the causal chain that led to spillover. This process involves characterizing the pathogen, contexts, and risks for transmission and determining the reservoir hosts and environmental conditions that enabled the event.
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