Table 2 Characteristics and IgG seroprevalence in community-dwelling adults in Germany (14,781 RKI-SOEP study participants with valid dried blood spot specimens, sampled predominantly in October–November 2020).
Total | N sero-positive (row %, unweighted) | Proportion of seropositives, corrected for specificity = 0.997 and initial test sensitivity = 0.811 | Estimate of cumulative seroprevalence since the beginning of the pandemic corrected for specificity = 0.997 and sensitivity that includes antibody decay = 0.616 | Seropositive cases with unnotified infection (according to self-report) | |
|---|---|---|---|---|---|
N | N (row %) | Row % (95% CI) | % of seropositives (95% CI) | ||
Total 18–99 years | 14,781 | 192 (1.3%) | 1.3% (0.9–1.7) | 1.7% (1.2–2.3) | 48% (37–59) |
Total 18–69 years | 12,324 | 167 (1.4%) | 1.4% (1.0–2.0) | 1.9% (1.3–2.7) | 45% (34–57) |
Sex | |||||
Women | 7938 | 82 (1.0%) | 1.1% (0.6–1.7) | 1.4% (0.8–2.2) | 49% (32–67) |
Men | 6843 | 110 (1.6%) | 1.5% (1.0–2.1) | 1.9% (1.3–2.8) | 46% (31–62) |
Age group | |||||
18–34 years | 2741 | 46 (1.7%) | 2.0% (1.1–3.5) | 2.6% (1.4–4.7) | 43% (26–61) |
35–49 years | 3484 | 35 (1.0%) | 1.2% (0.5–2.4) | 1.6% (0.7–3.2) | 47% (22–73) |
50–64 years | 4846 | 68 (1.4%) | 1.3% (0.7–2.1) | 1.7% (0.9–2.8) | 44% (26–64) |
65–79 years | 3055 | 39 (1.3%) | 0.6% (0.2–1.3) | 0.8% (0.3–1.7) | 68% (40–87) |
80–99 years | 655 | 4 (0.6%) | 0.2% (− 0.2 to 1.7) | 0.3% (− 0.2 to 2.2) | 100% |
Household composition | |||||
18–59 years | |||||
1 person | 1168 | 10 (0.9%) | 1.0% (0.2–2.9) | 1.3% (0.3–3.8) | 31% (6.1–75) |
2–4 persons, incl. children | 3494 | 38 (1.1%) | 1.3% (0.6–2.5) | 1.7% (0.8–3.2) | 35% (16–61) |
2–4 persons, no children | 3410 | 52 (1.5%) | 1.1% (0.6–1.9) | 1.5% (0.8–2.5) | 48% (28–68) |
> 4 persons, incl. children | 1168 | 24 (2.1%) | 4.4% (2.0–9.0) | 5.8% (2.7–12) | 54% (20–85) |
> 4 persons, no children | 112 | 2 (1.8%) | 0.5% (− 0.2 to 3.2) | 0.6% (− 0.2 to 4.2) | 0% |
60+ years | |||||
1 person | 1165 | 7 (0.6%) | 0.2% (− 0.2 to 1.2) | 0.3% (− 0.2 to 1.6) | 72% (24–95) |
> 1 person | 3842 | 54 (1.4%) | 1.0% (0.5–1.7) | 1.3% (0.7–2.2) | 57% (37–76) |
School education | |||||
Low | 2662 | 32 (1.2%) | 1.5% (0.7–2.7) | 1.9% (0.9–3.5) | 52% (26–77) |
Medium | 5057 | 64 (1.3%) | 1.1% (0.6–1.8) | 1.4% (0.8–2.4) | 51% (30–71) |
High | 6177 | 82 (1.3%) | 1.1% (0.7–1.7) | 1.4% (0.9–2.2) | 45% (28–62) |
Incidence stratum (district level)a | |||||
High incidence (Cluster A) | 2979 | 47 (1.6%) | 2.1% (1.0–3.9) | 2.7% (1.3–5.1) | 46% (27–65) |
Average incidence (Cluster B) | 8497 | 117 (1.4%) | 1.1% (0.7–1.6) | 1.4% (0.9–2.1) | 44% (30–60) |
Late second wave (Cluster C) | 1658 | 18 (1.1%) | 1.3% (0.4–3.2) | 1.7% (0.5–4.3) | 66% (34–88) |
Low incidence (Cluster D) | 1643 | 10 (0.6%) | 0.5% (− 0.0 to 1.8) | 0.7% (− 0.0 to 2.4) | 65% (25–92) |
Regional socioeconomic deprivation (district level) | |||||
Low deprivation | 3915 | 65 (1.7%) | 1.4% (0.9–2.3) | 1.9% (1.1–3.0) | 45% (27–64) |
Medium deprivation | 8790 | 103 (1.2%) | 1.1% (0.6–1.8) | 1.4% (0.8–2.3) | 47% (32–63) |
High deprivation | 2072 | 24 (1.2%) | 1.7% (0.7–3.5) | 2.3% (1.0–4.6) | 57% (29–81) |
