Conclusion
The results indicate that the labour process is an important and necessary part of delivery for the infants’ immune system, and also add to the growing body of evidence suggesting an unnecessary “overproduction” of CS leading to not only maternal and socioeconomic, but certainly also neonatal consequences. The long-term outcome, after pre-labour and in-labour CS, on the developing immune system in the children in this study, remains to be investigated. When the children in the CODIBINE cohort gets older, and thus have obtained an age where more diagnoses have been set, we plan to make a full study on several disorders and birth complications.