Congenital Syphilis

Patient Population:
Pediatric
Condition Major Pathogens  First-choice Therapy Alternative Therapy Comments

Syphilis (congenital) 

Refer to CDPH algorithm for guidance on interpretation of infant risk and recommended evaluation 

Treponema pallidum 

Full treatment course (as indicated per algorithm): 

Preterm infant (<=36 weeks GA): Refer to neonatal dosing guidelines for penicillin interval adjustments 

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Age <=7d:
Penicillin G 50,000 units/kg/dose IV q12h 

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Age 8 days to <1 month:
Penicillin G 50,000  units/kg/dose IV q8h 

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Age >=1 month:
Penicillin G 50,000 units/kg/dose IV q4-6 hours  

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Single dose - only use in selected infants as indicated per algorithm: Benzathine penicillin 50,000 units/kg IM x 1 dose 

 

Consider ID consult 

Duration (IV): 10 days 

Penicillin treatment should be continued without interruption; if > 1 day of treatment is missed, the entire course should be resumed and continued for the full duration from time of re-initiation  

References:  

American Academy of Pediatrics. In: Kimberlin DW, Barnett ED, Lynfield R, Sawyer MH, eds. Red Book: 2021 Report of the Committee on Infectious Diseases. 32nd ed. Elk Grove Village, IL: American Academy of Pediatrics; 2021.  

California Department of Public Health: Congenital Syphilis Resources for Providers