OMP and infection: That is, when a stable nontrivial equilibrium (and hence some immunity) is established by a primary infection, the model overestimates the antibody and ASC levels during a secondary infection in comparison with the data by predicting an increase of roughly 1–3 orders of magnitude in secondary antibody and ASC numbers in all cases except for the EcSf2a-2 OMP response (Panel e in Fig 4).