In 2339 Beverly encountered a crashed vessel containing diseased refugees from Kevratas, a Romulan subject world. This may have inspired Beverly to pursue a medical career. (TNG novel: Death in Winter)
- The event witnessed by Vaughn as described in Avatar may well be an alternate take on the Arvada III tragedy to that described in Death in Winter. Alternatively it could be another completely unrelated tragic event on the world.
In the late 26th century, Arvada III was still a Federation planet, and was considered as a place to temporarily house Kelvan refugees from the Andromeda Galaxy. (TOS - Strange New Worlds 9 short story: "Gone Native")