This guideline covers preventing bacterial infection in healthy babies of up to and including 28 days corrected gestational age, treating pregnant women whose unborn baby is at risk of infection, and caring for babies of up to and including 28 days corrected gestational age with a suspected or confirmed bacterial infection. It aims to reduce delays in recognising and treating infection and prevent unnecessary use of antibiotics. The guideline does not cover viral infections.

The guideline uses the terms 'woman' or 'mother' throughout. These should be taken to include people who do not identify as women but are pregnant or have given birth. Similarly, where the term 'parents' is used, this should be taken to include anyone who has main responsibility for caring for a baby. We recognise there are many different family arrangements.

In March 2024, we made new recommendations for newborn babies with suspected or confirmed bacterial meningitis. These recommendations are marked [2024] in the guideline. For more information, see update information.


This guideline includes new and updated recommendations on:

It also includes recommendations on:

See visual summaries on the recommendations for determining the need for antibiotic treatment of babies within 72 hours of birth and duration of antibiotic treatment for late-onset neonatal infection without meningitis.

View visual summary     View visual summary

Who is it for?

  • Healthcare professionals in primary and secondary care
  • Commissioners and providers of neonatal and maternity services
  • Parents and carers of babies who are at risk of or who have a neonatal infection

Is this guideline up to date?

September 2022: We have found no new evidence that affects the recommendations on the use of gentamicin for early onset neonatal infection. For more information, see the surveillance decision.

Guideline development process

How we develop NICE guidelines

This guideline was commissioned by NICE and developed in partnership with the Royal College of Obstetricians and Gynaecologists (RCOG)

This guideline updates and replaces NICE guideline CG149 (August 2012), which was called neonatal infection: (early onset): antibiotics for prevention and treatment.

Your responsibility

The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian.

All problems (adverse events) related to a medicine or medical device used for treatment or in a procedure should be reported to the Medicines and Healthcare products Regulatory Agency using the Yellow Card Scheme.

Local commissioners and providers of healthcare have a responsibility to enable the guideline to be applied when individual professionals and people using services wish to use it. They should do so in the context of local and national priorities for funding and developing services, and in light of their duties to have due regard to the need to eliminate unlawful discrimination, to advance equality of opportunity and to reduce health inequalities. Nothing in this guideline should be interpreted in a way that would be inconsistent with complying with those duties.

Commissioners and providers have a responsibility to promote an environmentally sustainable health and care system and should assess and reduce the environmental impact of implementing NICE recommendations wherever possible.

  • National Institute for Health and Care Excellence (NICE)