Seasonal Variation of Maternally Derived Respiratory Syncytial Virus Antibodies and Association with Infant Hospitalizations for Respiratory Syncytial Virus

This study used 459 prospectively sampled cord blood samples to examine the association between maternally derived respiratory syncytial virus (RSA-neutralizing antibodies and the RSV hospitalization season in Denmark. We found a clear temporal association and suggest that RSV-neutralizing antibody level plays a role in the RSV seasonal pattern. (J Pediatr 2009;154:296-8)