Birth Injury Answers

Newborn infection that was not caught in time

The short answer

Newborn infection can move from a baby who seems slightly off to a baby who is critically unwell within hours. There is no single reliable sign. 1

That is why the standard approach is to evaluate and treat a newborn with risk factors or with signs, and to stop antibiotics later if cultures are negative. Waiting for a culture result in a newborn who looks unwell is not the standard. 1

The numbers, up front

The signs are non-specific
Temperature instability, poor feeding, sleepiness, irritability, fast breathing and mottled color. No single sign identifies newborn infection 1
Low temperature counts
A newborn with infection is often cold rather than hot, which is the opposite of what most people expect 1
The prevention standard
Group B strep screening in late pregnancy and antibiotics through a vein during labor for those who screen positive or have risk factors 1
What the risk factors are
Preterm birth, prolonged rupture of membranes, fever in labor, and a previous baby with Group B strep disease 1
Why a lumbar puncture matters
Meningitis can be present with a negative blood culture, so a blood test alone cannot rule it out 2
Surveillance
CDC tracks invasive Group B strep disease through Active Bacterial Core surveillance and publishes reports on it 3

What is it?

A newborn's immune system is not yet practiced, and bacteria that an adult would clear can spread through a baby's bloodstream.

Early-onset infection appears in the first days and usually comes from organisms encountered around birth, most often Group B strep and E. coli. 1

Late-onset infection appears afterward and often comes from the environment, including lines in babies who are in hospital.

Why it gets missed

The signs are vague and they overlap with ordinary newborn behavior. A baby who is feeding less well, is sleepier than yesterday, or is "just not right" may have an infection or may be having an ordinary day.

Two specific traps:

Temperature. People expect fever. A newborn with infection is often cold rather than hot, and a low temperature is a genuine warning sign. 1

Speed. A baby can look reasonable and be critically unwell a few hours later. That compressed timeline is what makes the threshold for evaluation low.

The reason for treating first

Cultures take time. In a newborn who looks unwell or has significant risk factors, the standard is to start antibiotics and stop them if cultures are negative, rather than to wait. 1

What does standard care look like?

Group B strep screening in late pregnancy, with antibiotics through a vein in labor for those who screen positive or who have risk factors. 1

Risk assessment of the newborn, taking account of gestational age, duration of membrane rupture, maternal fever, and whether adequate antibiotics were given in labor. 1

Evaluation of a newborn with signs, including blood cultures and a blood count.

A lumbar puncture where meningitis is a possibility, since meningitis can be present with a negative blood culture. 2

Antibiotics started promptly, before results return, in a baby who is unwell or at significant risk. 1

Vital signs monitored in a baby with risk factors, including temperature.

Communication between the obstetric and newborn teams where there was fever or infection in labor. 4

Follow-up after discharge, with clear instructions on what to watch for. 5

What can go wrong?

Maternal risk factors not communicated to the newborn team, so the baby was assessed without that context. 1

A newborn with signs not evaluated, or evaluated and not treated while results were pending. 1

A low temperature not treated as a warning sign. 1

A lumbar puncture not done, so meningitis was neither confirmed nor excluded and the antibiotic course was too short. 2

Parent concern dismissed. A parent reporting that their baby is feeding less, is unusually sleepy, or is not right is reporting the most common presentation of newborn infection.

Discharge without clear instructions on what to watch for and when to return. 5

Antibiotics in labor not given where guidance indicated them. 1

chorioamnionitis not recognized or not communicated. 4

Whether any of this amounts to a departure from the standard takes a physician expert reading the whole record.

Which injuries can follow?

What does this look like in the records?

From the maternal record

  • The Group B strep screening result and the date. 1
  • Antibiotics given in labor: which drug, what time the first dose went in, and how many doses.
  • Every temperature reading in labor, with times.
  • The time of rupture of membranes, and how long before delivery.
  • Whether chorioamnionitis was diagnosed. 4

From the newborn record

  • The documented risk assessment.
  • Vital signs with times, particularly temperature.
  • Blood cultures and the times they were drawn.
  • Blood count and inflammatory markers.
  • Whether a lumbar puncture was done, and if not, why not. 2
  • Antibiotics given, with times, and the total duration.
  • Nursing notes describing feeding, alertness and color.
  • The discharge instructions. 5

Afterward

  • The placental pathology report, which can confirm infection of the membranes and is filed separately. 4 11
  • Hearing screening results, if meningitis occurred. 12

What can you do this week?

  1. Request the complete labor and delivery record for you and your baby. The records request builder writes the letters for you.
  2. Write down what you remember while it is fresh, using the delivery timeline builder.
  3. Read how to read your labor and delivery records before the records arrive.
  4. Check the deadline to file in your state with the statute of limitations lookup.

Questions parents ask

My baby had no fever. Could it still have been infection?

Yes. A newborn with infection is often cold rather than hot, and a low temperature is a genuine warning sign. 1 Absence of fever does not exclude newborn infection.

I said my baby was not right and nobody listened. What now?

Say it again, and say the specific changes: feeding less than yesterday, harder to wake, breathing faster, a change in color. Specifics get a different response from general worry. Newborn infection presents exactly this way, and parents are frequently correct. 1 If you are still concerned, ask to be seen rather than advised by phone.

Why did they start antibiotics before knowing there was an infection?

Because cultures take time and newborn infection moves fast. In a baby who looks unwell or has significant risk factors, the standard is to start antibiotics and stop them if cultures are negative. 1 Starting them is good care, not an overreaction.

The blood culture was negative, so was it not an infection?

Not necessarily. Meningitis can be present with a negative blood culture, which is why a lumbar puncture is the test for it. 2 If your baby was treated for possible infection and no lumbar puncture was done, that is a reasonable question to ask.

Words on this page, in plain English

Group B strep
A common bacteria that lives harmlessly in many adults. It can cause serious infection in a newborn who is exposed during birth.
lumbar puncture
A needle placed in the lower back to take a small amount of spinal fluid. It is the test for meningitis. It is also called a spinal tap.
chorioamnionitis
Infection of the membranes and fluid around the baby during pregnancy or labor. It is also called intraamniotic infection.
placental pathology
A lab exam of the placenta after birth. It can show infection, clots, or poor blood flow that happened before labor.

See the full glossary and records decoder

Where these facts come from

  1. American College of Obstetricians and Gynecologists. Committee Opinion 797, Prevention of Group B Streptococcal Early-Onset Disease in Newborns. 2020. www.acog.org/clinical/clinical-guidance/committee-opinion. Link checked September 3, 2026.
  2. Elsevier. Volpe's Neurology of the Newborn, Sixth Edition. 2018. www.elsevier.com/books/volpes-neurology-of-the-newborn/volpe. Link checked September 3, 2026.
  3. CDC, Active Bacterial Core surveillance. Group B Streptococcus Surveillance Report. 2024. www.cdc.gov/abcs/php/surveillance-reports/index.html. Link checked September 3, 2026.
  4. American College of Obstetricians and Gynecologists and American Academy of Pediatrics. Neonatal Encephalopathy and Neurologic Outcome, Second Edition. 2014. www.acog.org/clinical/clinical-guidance/task-force-report/ar. Link checked September 3, 2026.
  5. American Academy of Pediatrics, Pediatrics. Hospital Discharge of the High-Risk Neonate. 2008. publications.aap.org/pediatrics/article/122/5/1119. Link checked September 3, 2026.
  6. National Institute on Deafness and Other Communication Disorders. Newborn Hearing Screening. 2024. www.nidcd.nih.gov/health/your-babys-hearing-screening. Link checked September 3, 2026.
  7. National Institute of Neurological Disorders and Stroke. Hydrocephalus. 2025. www.ninds.nih.gov/health-information/disorders/hydrocephalus. Link checked September 3, 2026.
  8. The Journal of Pediatrics. Contemporary Profile of Seizures in Neonates. 2016. pubmed.ncbi.nlm.nih.gov/27364185/. Link checked September 3, 2026.
  9. National Institute of Neurological Disorders and Stroke. Cerebral Palsy. 2025. www.ninds.nih.gov/health-information/disorders/cerebral-pals. Link checked September 3, 2026.
  10. Pediatrics. Persistent pulmonary hypertension of the newborn in the era before nitric oxide. 2000. pubmed.ncbi.nlm.nih.gov/10617710/. Link checked September 3, 2026.
  11. U.S. Department of Health and Human Services, Office for Civil Rights. Individuals Right under HIPAA to Access their Health Information, 45 CFR 164.524. 2024. www.hhs.gov/hipaa/for-professionals/privacy/guidance/access/. Link checked September 3, 2026.
  12. CDC. Early Hearing Detection and Intervention (EHDI) Hearing Screening and Follow-up Survey. 2024. www.cdc.gov/hearing-loss-children/hearing-screening/index.ht. Link checked September 3, 2026.