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Medical Explanations / 10.09.2026

Group B Strep and the Dangers of a Missed Screening

Table of Contents

    Group B strep (GBS) can cause serious infections in newborns. Prenatal screening and antibiotics during labor, when indicated, help reduce the risk of early-onset GBS disease. When a baby suffers a serious infection, families may have questions about whether screening results and other relevant information were acted on appropriately.

    At The Becker Law Firm, we help Ohio families understand what happens when a group B strep birth injury may have been connected to a missed screening or a failure to treat. If your baby developed an infection after delivery, call 216-480-4620 to talk with our team.

    What Is Group B Strep?

    Group B Streptococcus, or GBS, is a type of bacteria that lives in the digestive and lower reproductive tracts of many healthy adults. Carrying GBS isn't an illness, and most people who have it never know. It usually causes no symptoms in the mother, which is exactly why testing matters, since there's no other way to know whether you're a carrier.

    Why GBS Can Matter During Labor and Delivery

    During labor and birth, a baby can come into contact with GBS bacteria in the birth canal. Most babies exposed to GBS stay healthy, but some develop infections that can progress quickly, including sepsis, pneumonia, and meningitis. 

    Newborns, particularly premature babies, have immune systems that aren't fully developed, which makes an infection harder for them to fight. The goal of screening and treatment is to lower that risk before the baby is born.

    When Should Pregnant Patients Be Screened for Group B Strep?

    ACOG recommends routine GBS screening between 36 weeks, 0 days and 37 weeks, 6 days of pregnancy, unless antibiotics during labor are already indicated because of GBS in the urine during the current pregnancy or a previous newborn with GBS disease. The screening involves a swab of the vagina and rectum that is tested in a laboratory.

    A positive result generally indicates a need for antibiotics during labor. GBS-specific antibiotics are not required for a cesarean birth performed before labor begins and before the membranes rupture.

    Situations That May Require Action Without a Routine Screening Result

    Some patients don't have a screening result when labor begins, because they went into labor early, didn't receive routine prenatal care, or the result wasn't available. 

    When GBS status is unknown at the start of labor, factors that may indicate a need for antibiotics include:

    • Preterm labor with a substantial risk of birth before 37 weeks
    • A temperature of 100.4°F (38°C) or higher during labor
    • Ruptured membranes for 18 hours or longer at term

    A previous newborn with GBS disease or GBS found in the urine during the current pregnancy generally establishes a need for antibiotics during labor without a routine screening result.

    How Antibiotics During Labor Help Protect Newborns

    When a patient tests positive for GBS, or has risk factors with an unknown result, the standard approach is intrapartum antibiotic prophylaxis, meaning antibiotics given through an IV during labor. These measures are intended to reduce early-onset GBS disease during the first week of life, not to prevent every infection that may develop after birth.

    Antibiotics are most effective when administered at least four hours before delivery, although shorter exposure can still provide benefit. Necessary obstetric care should not be delayed solely to complete that four hour window. 

    What Can Happen When GBS Screening or Treatment Is Missed?

    A missed screening or a missed treatment is not one single type of error. A breakdown can occur at several points in care:

    • Routine screening wasn't ordered or performed: The 36 to 37 week swab was never done.
    • The result wasn't documented or communicated: A positive result sat in a chart and never reached the labor and delivery team.
    • Indicated antibiotics were omitted or potentially delayed: Antibiotics were not given when indicated, or the records raise questions about whether they could reasonably have been started sooner.
    • Unknown status and risk factors were overlooked: The team didn't act on a fever, early labor, or prolonged rupture of membranes when no result was available.
    • The newborn's infection wasn't recognized or treated promptly: Warning signs after delivery weren't acted on quickly.

    Early-Onset GBS Infection and Newborn Sepsis

    Early-onset GBS disease appears in the first week of life, usually within the first 24 hours. A newborn with an infection may have trouble breathing, a fast or irregular heart rate, a low or unstable temperature, poor feeding, lethargy, or seizures. 

    GBS infection can cause neonatal sepsis, a life-threatening response to infection. Sepsis and meningitis in a newborn can lead to lasting harm, including brain injury, cerebral palsy, hearing or vision loss, and developmental delays. Only a qualified medical team can diagnose these conditions, and every baby's situation is different.

    If your child suffered a serious injury after a newborn infection, call The Becker Law Firm at 216-480-4620 to discuss whether a legal review may help clarify what happened. 

    When a Missed GBS Screening May Raise Legal Questions

    Not every newborn GBS infection reflects a mistake. Some babies develop GBS disease even when screening was done and antibiotics were given on time, and a bad outcome alone doesn't establish that anyone was negligent. The legal question is whether the care fell below the accepted standard and whether that failure caused the harm. 

    Records That May Help Clarify What Happened

    A review of an infection-related birth injury generally involves:

    • Prenatal records, including whether a GBS screening was ordered and when
    • Lab results and the date they were reported
    • Labor and delivery notes, including the timing of ruptured membranes and any fever
    • Medication administration records showing when and whether antibiotics were given
    • Newborn records, including vital signs, lab work, and NICU notes
    • Documentation of how and when signs of infection were identified and treated

    Speak With The Becker Law Firm About a Possible Birth Injury Claim

    If your baby developed a serious infection after delivery, you may be left wondering whether it could have been caught earlier. Managing partner Romney Cullers leads the team of lawyers and medical professionals at The Becker Law Firm. Since joining The Becker Law Firm in 2014, he has personally recovered hundreds of millions of dollars for clients.

    In recent years, our lawyers have secured the largest settlement in Ohio history for injuries to an individual plaintiff and the largest wrongful death verdict in Ohio Court of Claims history.

    The Becker Law Firm reviews medical records and works with qualified medical experts to investigate whether a failure in care contributed to a child's injury. Contact The Becker Law Firm at 216-480-4620 to discuss your family's situation.

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