US, Virginia—Vital Records, 1715–1901 [Part B][M3R8-9ZT]
The first line has only a birth date. Should I index it?
You will index it, leaving the birth year blank, if you cannot locate one
To clarify, the line has NO other information, including names. I ascertained the birth year by looking at previous screens.
If there is no information, not even a single name of a parent, and no date, then you don't have anything to index.