What is the recommended treatment for Group B Streptococcal (GBS) pneumonia?

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Last updated: June 1, 2025View editorial policy

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From the Research

The recommended treatment for Group B Streptococcal (GBS) pneumonia is intravenous penicillin G or ampicillin, with penicillin G being the preferred choice due to its efficacy and the universal susceptibility of GBS to penicillins 1.

Treatment Options

  • For penicillin G, the typical dosage is 3-4 million units every 4 hours, as this dosing interval ensures anti-GBS activity in all patients 2.
  • Ampicillin is usually administered at 2 grams every 4-6 hours.
  • Treatment duration typically ranges from 10-14 days, depending on clinical response.

Alternative Therapies

  • For patients with penicillin allergies, alternatives include ceftriaxone (1-2 grams daily) or vancomycin (15-20 mg/kg every 8-12 hours) 3.
  • In severe cases, particularly in neonates or immunocompromised patients, combination therapy with an aminoglycoside like gentamicin (5-7 mg/kg daily) may be added for synergistic effect.

Supportive Care

  • Supportive care including oxygen therapy, respiratory support, and management of complications is essential.
  • GBS pneumonia can progress rapidly, especially in vulnerable populations like neonates and the elderly, making prompt treatment crucial 1.

Key Considerations

  • The choice of antibiotic should be based on the patient's allergy history and susceptibility of GBS isolates 3.
  • Vancomycin is used in cases where patients are allergic to penicillin and second-line antibiotics are ineffective, although resistance to vancomycin has been reported 1.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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