Fig. 2: Influenza A/H3N2 epidemics and duration of protection across seasons.
From: Homotypic protection against influenza in a pediatric cohort in Managua, Nicaragua
A Seasonality and clades of influenza A H3N2 cases among children in the study from 2011 to 2019. B Log-adjusted odds ratios for a given exposure and outcome year looking at protection from repeat infection with error bars for the confidence intervals. C Log-adjusted odds ratios for a given exposure and outcome year looking at protection from repeat infection, stratified on age and restricted to season distances less than 4 years, with error bars for the confidence intervals. For B, C, n = 2764 children followed over 9 study years. Darker colors in the plots represent seasons that are closer together in time; lighter colors represent seasons that are further apart.
