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Congenital syphilis surveillance and newborn evaluation in a low-incidence state
D Martin1, J Bertrand, C McKegney
1Department of Pediatrics, MC 867B, Hennepin County Medical Center, 701 Park Ave, Minneapolis, MN 55415, USA. dawn.martin@co.hennepin.mn.us
Insights
Congenital syphilis surveillance in Minnesota revealed significant gaps in prenatal screening and newborn management. Improved protocols and data are crucial to prevent congenital syphilis transmission.
Area of Science:
- Public Health
- Infectious Disease Epidemiology
- Maternal and Child Health
Background:
- Congenital syphilis poses a significant threat to newborns, necessitating robust surveillance and management strategies.
- Effective prevention relies on comprehensive prenatal care, timely screening, and adequate postnatal evaluation of at-risk infants.
Purpose of the Study:
- To evaluate the effectiveness of congenital syphilis surveillance in Minnesota.
- To assess the evaluation and management practices for newborns at risk of congenital syphilis.
- To examine the adequacy of prenatal syphilis screening and hospital delivery screening practices.
Main Methods:
- Case ascertainment and detailed medical record review were employed.
- The study focused on newborns at risk for congenital syphilis in the Minneapolis-St. Paul metropolitan area from 1992-1994.
- Key outcome measures included case ascertainment completeness, maternal and newborn management, and hospital screening practices.
Main Results:
- Of 80 at-risk mother-infant pairs, 36 infants (45%) were probable congenital syphilis cases. Prenatal screening was inconsistent, with only 46% of women screened at delivery.
- Adequate evaluation and treatment rates for probable cases were suboptimal (56% adequately evaluated, 69% treated).
- The state's congenital syphilis registry demonstrated low sensitivity (39%) for case ascertainment, and many hospitals lacked formal screening policies.
Conclusions:
- Adherence to standardized protocols for evaluating and managing at-risk newborns is essential.
- Vigilant prenatal and delivery screening, coupled with adequate follow-up, is critical to reduce congenital syphilis rates.
- Enhanced surveillance data collection and increased resources are necessary for effective identification and follow-up of at-risk newborns.
Objectives:
To evaluate congenital syphilis surveillance in Minnesota, to assess the evaluation and management of newborns at risk for congenital syphilis, and to assess prenatal syphilis screening.
Design:
Case ascertainment and medical record review.
Setting:
The 7-county Minneapolis-St Paul metropolitan area.
Patients:
Newborns at risk for congenital syphilis during a 3-year period (1992-1994).
Main Outcome Measures:
The completeness of congenital syphilis case ascertainment, maternal demographic data, maternal syphilis management, newborn evaluation for and management of congenital syphilis, and hospital syphilis screening practices at delivery.
Results:
Eighty mother-infant pairs who were at risk for congenital syphilis were identified from 3 sources. Using the Centers for Disease Control and Prevention's congenital syphilis case definition, 36 infants (45%) were classified as probable cases, 42 (53%) were classified as noncases, and 2 (3%) were syphilitic stillbirths. Forty-seven women (59%) had syphilis serologic tests performed in the third trimester; only 37 (46%) had syphilis screening at delivery. Conditions of the mothers of 8 probable cases (22%) were diagnosed at delivery. Most probable cases (86%) were evaluated; only 56% were evaluated adequately. Twenty-five probable cases (69%) were treated. Most hospitals did not have formal policies for syphilis screening at delivery. The Minnesota Department of Health's congenital syphilis registry lacked sensitivity (39%) as a case ascertainment method.
Conclusions:
Clinicians should adhere to standardized protocols in the evaluation and management of at-risk newborns. Vigilant screening prenatally and at delivery and adequate follow-up are critical to reduce congenital syphilis. Improved surveillance data and resources are needed for the identification and follow-up of newborns at risk for congenital syphilis.