Immunity to mumps virus in children population in Bulgaria

Figures & data

Figure 1. Test procedure for detection of anti-MuV IgG antibodies in human serum by ELISA, Euroimmun, Germany.

Table 1. Demographic characteristics of the study participants (n = 734) and their vaccination status.

Demographic characteristics	Participants n (% of all in sample)	Seropositivity % (95% CI)	p value
Gender
Male	365 (50)	90 (87–93)	0.01
Female	369 (50)	95 (92–97)	0.01
Age group
≥1	23 (3.1)	87 (68–95)	0.24
2–6	316 (43)	93 (89–95)	1
7–11	243 (33)	91 (87–94)*	0.23
12–16	152 (21)	96 (92–98)	0.08
Total	734 (100)	93 (91–94)	–

*1 equivocal sample in this group. In the statistical analysis, it was treated as a positive sample.

Table 2. Seropositivity by age group among male and female study participants.

Age group	Number tested males	Number tested females	Seropositivity among males % (95% CI)	Seropositivity among females % (95% CI)
≥1	14	9	86 (60–96)	89 (56–98)
2–6	158	158	90 (84–94)	96 (91–98)
7–11	132	111	89 (83–94)	93 (86–96)
12–16	61	91	95 (87–98)	97 (91–99)

Figure 2. Scatterplot showing age and anti-MuV IgG antibody concentrations (RU/mL).

Data availability statement

The anonymized data that support the findings from this study are available from the corresponding author [SK] upon reasonable request.