As covid-19 cases spiral out of control in the US, states are scrambling to fight the virus with an increasingly stretched arsenal. Many of them have the same weapons at their disposal: restrictions on public gatherings and enforcement of mask wearing, plus testing, tracing, and exposure notifications.
But while many states struggle to get their systems to work together, Guam—a tiny US territory closer to the Korean Peninsula than the North American mainland—may offer clues on how to rally communities around at least one part of the puzzle: smartphone contact tracing.
With no budget, and relying almost entirely on a grassroots volunteer effort, Guam has gotten 29% of the island’s adult residents to download its exposure notification app, a rate of adoption that outstrips states with far more resources.
A collaborative effort
Guam diagnosed its first covid cases in March, but a few weeks later, it gained international attention—and a