Finally, data that suggest a non-redundant role of MBL in staphylococcal infections in infancy come from two recent clinical studies that show that infants with MBL2 mutations are more susceptible to S. aureus colonization [32] and fatal invasive methicillin-resistant S. aureus co-infections after influenza [33]. The gene discussed is MBL2; the disease is staphylococcal infection.