Natural maternal immunity protects neonates from Escherichia coli sepsis - Nature

Nature, Published online: 11 March 2026; doi:10.1038/s41586-026-10225-zNeonatal sepsis caused by Escherichia coli is associated with reduced transfer of pathogen-specific maternal antibodies and, in a mouse model, can be prevented by maternal preconceptual colonization with probiotic E. coli.