I enjoyed this one a lot (despite it dragging a bit towards the end). Walker is so spot-on about public reactions to the discovery and spread of a novel virus, I could hardly believe that this was published in 2019. With one kid at college near the mountains east of LA and another who goes to camp every year in the mountains there, I had a lot of stored imagery to apply to the setting of this novel (but I think I would have liked it anyway).