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(A) Comparison between maternal and cord blood anti-Fluzone IgM. r = 0.26; P = 0.027. (B) Comparison between maternal and cord blood anti-MP IgM. r = 0.19; P = 0.1. (C) Comparison between maternal and cord blood anti-Fluzone IgG. r = 0.94; P < 0.0001. (D) Comparison between maternal and cord blood anti-MP IgG. r = 0.95; P < 0.0001.
