Figure 1.

Approaches to estimating disease transmission from serosurveillance data. (a) Age‐based methods: Seroprevalence methods based on antibody detection and age class can estimate FOI as a function of age. (b) Titre‐based methods: Quantitative antibody methods use pathogen‐specific longitudinal antibody kinetic data from laboratory experiments along with quantitative antibody titres from the field‐collected serosurveillance studies, to estimate individual TSI (middle plot, red circles are time of exposure, black are sampling times) for each individual in the serosurveillance sample and derive FOI as a function of time and/or age for the population.