TABLE 2.

Determination of IgM in saliva and IgA in sera and saliva in samples of serum IgM-positive cases of group 1 (single samples categorized for serum IgM according to the number of days since symptom onset and the status of infection)

Immunoglobulin groupNo. of samples at daya:
1234567>7Total
AllAllAllAllAllAllAllAllAll
Total202761121119181221020262422148722646
Saliva IgM
    Positive202651111107161221020251420128652243
    Negative000110101202000000110220743
Serum IgA
    Positive202541121119181221020262420128682246
    Negative000220000000000000000220440
Saliva IgA
    Positive20254181760681720232117116511932
    Negative00022040431241300030353221714
  • a “Day” refers to the day since symptom onset. Immune status is indicated as all types (All), primary (1°), or secondary (2°).