According to a page linked to from the ?fluview documentation, "ord" and "lax" are supposed to have data in fluview. However, of these city-level data, only "jfk" returns any data.
flu_data <- epidatr::pub_fluview(regions = c("ord", "jfk", "lax"))
unique(flu_data$region)
#> [1] "jfk"
Created on 2025-07-03 with reprex v2.1.1