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Titers across serum collection time points. (A) Bovine viral diarrhea virus type 1 (n = 1,654), (B) bovine viral diarrhea virus type 2 (n = 2,231), (C) bovine respiratory syncytial virus (n = 1,631), and (D) bovine herpesvirus 1 (n = 1,631). The average titer level is plotted in green and all individuals are plotted in gray.
