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Group B streptococcal pneumonia — Clinical Guidelines

Overview

Group B streptococcal (GBS) pneumonia primarily affects neonates, particularly those born prematurely, but can occur in other high-risk populations including pregnant women and immunocompromised individuals 1 11 13.

Diagnosis

Clinical Presentation: Fever, respiratory distress, and signs of sepsis 11.

Laboratory Tests: Blood cultures are crucial for confirming the diagnosis 11.

Nasopharyngeal/Sputum Cultures: Useful in non-neonatal cases to identify GBS 1 11.

Preterm Infants: Consider underlying conditions like agranulocytosis (e.g., Kostmann syndrome) 13.

Management

First-Line Treatment: Intravenous antibiotics such as penicillin or ampicillin, often combined with an aminoglycoside like gentamicin for severe cases 1 11.

Alternative Agents: Vancomycin if there is a history of beta-lactam allergy 2.

Duration: Treatment duration varies but typically lasts 10-14 days for neonates 1 11.

Supportive Care: Mechanical ventilation, fluid management, and monitoring for complications 11.

Special Populations

Pregnancy: Intrapartum antibiotic prophylaxis (e.g., penicillin) to prevent early-onset neonatal GBS disease 1 1 11 15 16.

Premature Infants: Higher risk of severe outcomes; close monitoring and aggressive management are essential 13.

Immunocompromised Individuals: May require prolonged and tailored antibiotic therapy 13.

Key Recommendations

Intrapartum Antibiotic Prophylaxis: Administer intrapartum antibiotics to pregnant women with GBS colonization to prevent early-onset neonatal GBS disease (Evidence: Strong 1 11 15).

Screening Timing: Implement universal GBS screening between 36 0/7 and 37 6/7 weeks of gestation, with re-screening for initially negative women at 35 0/7 to 36 6/7 weeks if indicated, to optimize prevention strategies (Evidence: Moderate 4).

Appropriate Antibiotic Use: Ensure vancomycin prescribing aligns with guidelines to prevent neonatal GBS infections, avoiding unnecessary use (Evidence: Moderate 2).

Monitor and Treat Complications: Closely monitor preterm infants and those with underlying conditions for severe outcomes and tailor treatment accordingly (Evidence: Expert opinion 13).

References

1 Moradi M, Grieger JA, Teong XT, Heilbronn LK. Intrapartum Antibiotic Prophylaxis and Child Health Outcomes: A Systematic Review and Meta-Analysis of Observational Studies. BJOG : an international journal of obstetrics and gynaecology 2026. link 2 Assabahi A, Driggers R, Keeys CA, Mader A, Norris P. Evaluation of appropriate vancomycin prescribing for the prevention of newborn group B streptococcal infections in a community hospital obstetrics service. Journal of perinatal medicine 2022. link 3 Martelli P, Oh S. Long-term deep sedation using Zoletil and haloperidol for the treatment of streptococcal pneumonia in an orangutan (Pongo pygmaeus). The Journal of veterinary medical science 2021. link 4 Williams M, Zantow E, Turrentine M. Cost Effectiveness of Latest Recommendations for Group B Streptococci Screening in the United States. Obstetrics and gynecology 2020. link 5 Rivera-Hernandez T, Carnathan DG, Jones S, Cork AJ, Davies MR, Moyle PM et al.. An Experimental Group A . mBio 2019. link 6 Gustafson LW, Blaakær J, Helmig RB. Group A streptococci infection. A systematic clinical review exemplified by cases from an obstetric department. European journal of obstetrics, gynecology, and reproductive biology 2017. link 7 Long T, Bongiovanni T, Dashevsky M, Halim A, Ross JS, Fogerty RL et al.. Impact of laboratory cost display on resident attitudes and knowledge about costs. Postgraduate medical journal 2016. link 8 Edwards RK, Tang Y, Raglan GB, Szychowski JM, Schulkin J, Schrag SJ. Survey of American obstetricians regarding group B streptococcus: opinions and practice patterns. American journal of obstetrics and gynecology 2015. link 9 Gilbert GL. Vaccines for other neonatal infections: are group B streptococcal infections vaccine-preventable?. Expert review of vaccines 2004. link 10 Timmers-Raaijmaakers BC, Wolfs TF, Jansen NJ, Bos AP, van Vught AJ. Invasive group A streptococcal infection after tonsillectomy. The Pediatric infectious disease journal 2003. link 11 Benitz WE. Perinatal treatment to prevent early onset group B streptococcal sepsis. Seminars in neonatology : SN 2002. link90117-x) 12 Petrova A, Smulian JC, Ananth CV. Obstetrician preferences for prenatal strategies to reduce early-onset group B streptococcal infection in neonates: a population-based survey. American journal of obstetrics and gynecology 2002. link 13 Fujiu T, Maruyama K, Koizumi T. Early-onset group B streptococcal sepsis in a preterm infant with Kostmann syndrome. Acta paediatrica (Oslo, Norway : 1992) 2002. link 14 Davies HD, Adair CE, Schuchat A, Low DE, Sauve RS, McGeer A. Physicians' prevention practices and incidence of neonatal group B streptococcal disease in 2 Canadian regions. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne 2001. link 15 . Clinical bulletin No. 2-January 1997. Early-onset group B strep infection in newborns prevention and prophylaxis. Journal of nurse-midwifery 1997. link89470-0) 16 Gigante J, Hickson GB, Entman SS, Oquist NL. Universal screening for group B streptococcus: recommendations and obstetricians' practice decisions. Obstetrics and gynecology 1995. link00422-A) 17 Claesson BE, Svensson NG, Gotthardsson L, Gotthardsson L, Gärdén B. A foodborne outbreak of group A streptococcal disease at a birthday party. Scandinavian journal of infectious diseases 1992. link

Group B streptococcal pneumonia