Predictors of Severe Acute Respiratory Syndrome Coronavirus 2 Seropositivity Before Coronavirus Disease 2019 Vaccination Among Children 0-4 Years and Their Household Members in the SEARCh Study.

There was a trend towards households with ≥5 people (OR = 2.0; 95% CI, .75–5.2) or >1 person per bedroom (OR = 1.9; 95% CI, .60–8.4) being more likely to have least 1 seropositive member, but results did not reach statistical significance ( Supplementary Table 2 ).

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