This is from another Freep thread.
CDC: Woman may have gotten Ebola after sex with survivor
Washington Examiner ^ | May 1, 2015 | Robert King
http://www.freerepublic.com/focus/f-news/3285577/posts
and from the replies to the thread —
Here is the reference:
http://www.ncbi.nlm.nih.gov/pubmed/9988181
In the table, the 82 day seminal fluid sample contained virus that was cultured in cells, meaning it was active. Several other samples only contained RNA, but did not infect cells.
Earlier on in the outbreak, it was mentioned that live virus had been found in the semen of survivors for 60 days after they had tested ‘clean’ otherwise. It was cause for concern then, and apparently the time for remaining infectious (via sexual contact after recovery) has been extended by more data.