The West Coast (Pacific states) doesn’t have as much Lyme as the Northeast, but it’s not free of it – the western blacklegged tick in Northern California, Oregon, etc., does transmit Lyme, though case numbers are lower. Anaplasmosis and Babesiosis are relatively rare but can occur there too (via western blacklegged ticks). The Rocky Mountain states (Colorado, Montana, Idaho) have Rocky Mountain wood ticks – so RMSF and Colorado tick fever are considerations, though RMSF is less common there than in the East. Tick-borne relapsing fever (a different illness caused by soft ticks, often in mountain cabins) occurs in parts of the West. The Southwest (Arizona, New Mexico) has had RMSF outbreaks associated with brown dog ticks around homes. Generally, the West has fewer tick disease cases compared to the East, except for specific locales. But as we always say, that doesn’t mean you shouldn’t take precautions – you absolutely should, just with knowledge of what’s in your area.