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Published on: October 10, 2025
Absence of viruses in amniotic fluid of women with PPROM: a case series
1University of Pittsburgh, Department of Obstetrics, Gynecology, & Reproductive Sciences, Pittsburgh, PA 15213, USA. anaresh@tulane.edu
Abstract:
Preterm premature rupture of membranes (PPROM) and preterm birth are strongly linked to intrauterine inflammation. Bacterial infection is often not identified as the cause. The objective was to examine the amniotic fluid of women with PPROM for viral genomic content, and to correlate with the presence of bacterial infection and markers of intrauterine inflammation. A case series of 13 women with PPROM is presented. Amniocentesis was performed in each of these women. DNA/RNA isolated from amniotic fluid was tested using polymerase chain reaction (PCR) for the presence of herpes simplex virus (HSV)-1 and -2, adenovirus, adeno-associated virus-2 (AAV-2), cytomegalovirus (CMV), parvovirus B19, human papilloma viruses (HPV), and enteroviruses. Maternal and neonatal hospital course and laboratory information, including results of amniotic fluid inflammatory marker testing and bacterial culture, were determined from the medical record. All amniotic fluid samples were negative for HSV-1 and HSV-2, adenovirus, AAV-2, CMV, parvovirus B19, HPV, and enteroviruses. Six of the 13 fluid samples (46%) had positive bacterial cultures, including culture for atypical organisms. In a small series of women, viral infection as assessed by the presence of viral genomic content in the amniotic fluid was not associated with PPROM.
Insights
This study found no evidence of viral genomic content in amniotic fluid samples from women with preterm premature rupture of membranes (PPROM). Viral infection was not associated with PPROM or intrauterine inflammation in this case series.
Area of Science:
- Obstetrics and Gynecology
- Infectious Diseases
- Neonatology
Background:
- Preterm birth and preterm premature rupture of membranes (PPROM) are linked to intrauterine inflammation.
- Bacterial infection is often implicated, but viral causes are less understood.
Observation:
- A case series of 13 women with PPROM was analyzed.
- Amniotic fluid was tested via PCR for common viruses (HSV, adenovirus, CMV, HPV, etc.).
- Bacterial cultures and inflammatory markers were also assessed.
Findings:
- No viral genomic content was detected in any amniotic fluid samples.
- Bacterial infections were present in 46% of the samples.
- Viral infection was not associated with PPROM in this cohort.
Implications:
- Viral infection does not appear to be a significant factor in PPROM.
- Further research is needed to fully understand the etiology of PPROM and associated inflammation.
- Focus may remain on bacterial causes and inflammatory pathways.
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