The importance of MBL’s interactions with pathogens has been most clearly observed and defined in infants, where low levels of serum MBL have been linked to severe and recurrent infection (Summerfield et al., 1997; Faber et al., 2007) and greater risk of developing neonatal sepsis (Gao et al., 2015). This evidence concerns the gene MBL2 and Neonatal sepsis.