Skip to main content

Table 2 Secondary attack rates among household contacts stratified by household type (children’s households versus staff households) and presence of symptoms

From: Increased transmissibility of SARS-CoV-2 alpha variant (B.1.1.7) in children: three large primary school outbreaks revealed by whole genome sequencing in the Netherlands

Household type (n)

N cases/n household contacts

SAR (95% CI)

Total households (97)

99/249

40% (34–46)

Child households (79)

85/216

39% (33–46)

Symptomatic children (58)

80/164

49% (41–57)

Asymptomatic children (21)

5/52

9% (3–21)

Staff households (18)

14/33

42% (25–61)

Symptomatic staff (16)

13/27

48% (29–68)

Asymptomatic staff (2)

0/4

0% (0–60)

  1. SAR secondary attack rate, CI confidence interval