I think I know what happened:
The date, times, and audio files of all the "Vaccine" logs from the
Velasquez Medical Research Centre located in
LP 389-95 (which I visited months ago) were replaced with the date, times, location, and audio files from my visit to
Fort Asch, and there still are no logs titled Fort Asch or Project Seraph in the Codex.
I submitted this to the
Issue Tracker, in case anyone has the same problem.