Infection frequency and 95% CI estimated separately for each aliquot by maximum likelihood (i.e., not using the mixed effects statistical model, see Methods: “Analyzing aliquots separately”).

Abstract

Cryopreserved aliquots are indicated by shaded symbols, fresh aliquots by open symbols. “Index i” is used in model output, and “Cohort ID” represents the identifier used in the SCOPE/OPTIONS cohort.</p