Figure 1.
A, Comparison of RSV antibody in maternal (x-axis) and cord blood (y-axis) at time of delivery in Seattle, Washington, and Yukon- Kuskokwim Delta (YKD), Alaska, mother–infant pairs. When multiple samples were available, maternal titer was from the time point closest to birth. B, RSV antibody concentrations in mothers measured at 2 prenatal visits (visits 1 and 2) and in infants at delivery (cord blood) in Seattle and YKD mother–infant pairs. Abbreviation: RSV, respiratory syncytial virus.