Table 2 Age-specific seroprevalences. Presence of IgM, IgA and IgG antibodies against S and/or RBD antigens was analyzed. The table presents the cumulative seroprevalence and seroprevalences for each isotype, their proportions and CI.

From: Seroprevalence and socioeconomic impact of the first SARS-CoV-2 infection wave in a small town in Navarre, Spain

Isotype specificity

0–10 years of age (n = 142)

11–20 years of age (n = 159)

21–50 years of age (n = 177)

51–65 years of age (n = 157)

 > 65 years of age (n = 93)

Estimated at total population (n = 728)

IgG and/or IgM and/or IgA

3/142

2.1%

(1.5–3)

18/159

11.3%

(9.9–13)

14/177

7.9%

(6.7–9.2)

14/157

8.9%

(7.6–9.2)

7/93

7.5%

(6–9.3)

56/728

7.9%

(7.3–8.6)

IgM

0

8/159

5.0%

(4.1–6.2)

7/177

4.0%

(3.1–5)

5/157

3.2%

(2.4–4.2)

2/93

2.2%

(1.4–3.3)

22/728

3.3%

(2.9–3.8)

IgA

2/142

1.4%

(0.9–2.2)

8/159

5.0%

(4.7–7)

6/177

3.4%

(2.6–4.3)

9/157

5.7%

(4.7–7)

7/93

7.5%

(6–9.4)

32/728

4.3%

(3.8–4.8)

IgG

3/142

2.1%

(1.5–3)

8/159

5.0%

(4–6.2)

2/177

1.1%

(0.7–1.7)

2/157

1.3%

(0.8–2)

1/93

1.1%

(0.6–2)

16/728

2.0%

(1.7–2.4)

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