1. Serum sperm antibodies are not elevated after mumps orchitis
Svetoslav Kalaydjiev, M.D., Dimitrina Dimitrova, M.D., Marina Nenova, M.D., Siika Peneva, M.D., Ivan Dikov, M.D., Lyudmi Nakov, M.D. 
Fertility and Sterility 
Volume 77, Issue 1, Pages (January 2002)
DOI: /S (01)

2. FIGURE 1
Sperm antibody incidence of mumps orchitis patients sampled 1 to 7 days after the onset of clinical symptoms (MO group), 61 to 431 days after the onset of clinical symptoms (PMO2 group), and both in the acute phase (TS-MO group) and after the disease (TS-PMO group). Also sampled were blood donors (BD group) and males with unexplained infertility (INF group). GAT = gelatin agglutination test; TAT = tray agglutination test; SIT = sperm immobilization test. None of the men tested positive by ELISA.
Kalaydjiev. Mumps orchitis and sperm antibodies. Fertil Steril 2002.
Fertility and Sterility  , 76-82DOI: ( /S (01) )

3. FIGURE 2
Results from the Kibrick gelatin agglutination test (GAT), the Friberg tray agglutination test (TAT), the Isojima sperm immobilization test (SIT), and ELISA for sera sampled on different intervals (X-axis) after the onset of orchitis symptoms. The sperm antibody levels (Y-axis) are presented as log2 titer for GAT and TAT, sperm immobilization value (SIV) for SIT, and optical density (OD) measured at 492 nm in ELISA. The dashed line indicates the cut-off level above which sera are considered positive.
Kalaydjiev. Mumps orchitis and sperm antibodies. Fertil Steril 2002.
Fertility and Sterility  , 76-82DOI: ( /S (01) )