Elaina Vescio was a Starfleet officer in the 24th century. She was a lieutenant in the years 2368-2372.
In 2368, she was a crew member aboard the USS Enterprise-D. In the week of stardate 45852.1, on Monday, she had an appointment for a personal counseling session with Counselor Deanna Troi at 12:30. This information was displayed on a personal appointment log in Troi's quarters. (TNG: "Imaginary Friend", "The Next Phase", okudagram)
In 2371, she was a crew member aboard the USS Voyager. She was among the crew stranded in the Delta Quadrant, when Voyager was forcefully brought there by the Caretaker.
In 2372, she was listed on the Planetary Geosciences Division duty roster. (VOY: "Parturition")