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Mycoplasma hominis in maternal and fetal infections
1Department of Medical Microbiology, University of Manitoba, Winnipeg, Canada.
Abstract:
Although prevalence of M. hominis colonization during pregnancy varies from 12-50%, its role in infections of the mother and newborn infants is unclear. Definite correlations exist with chorioamnionitis and amniotic fluid infections, but as it is rarely isolated alone during these infections, its pathogenic role is uncertain. Its association with septic abortion is similarly questioned. Prevalence and antibody titers to M. hominis increase with increasing parity. Transient bacteremia occurs in approximately 2.5% of normal deliveries. M. hominis does have a significant role in postpartum fever. Women harboring the organism during labor with low predelivery antibody titers are at risk. Approximately 30% of exposed infants are colonized (4% of all infants) but there are only a few reports of neonatal meningitis, pneumonia, or skin abscesses due to M. hominis. Most recover without specific therapy. The role of antimicrobial therapy of M. hominis in pregnancy and the neonatal period is unclear. Further studies of these issues should simultaneously consider all potential genital tract pathogens.
Insights
Mycoplasma hominis colonization during pregnancy is common, but its role in maternal and infant infections remains uncertain. It is linked to postpartum fever, though neonatal infections are rare and usually resolve without treatment.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Medicine
- Microbiology
Background:
- Mycoplasma hominis colonization during pregnancy has a variable prevalence (12-50%).
- Its pathogenic role in maternal and neonatal infections is not well-defined, despite associations with chorioamnionitis and amniotic fluid infections.
- The organism's role in septic abortion and its association with parity require further investigation.
Purpose of the Study:
- To clarify the role of Mycoplasma hominis in pregnancy-related infections.
- To assess the risks and outcomes associated with M. hominis colonization in mothers and newborns.
- To evaluate the need for antimicrobial therapy in M. hominis infections during pregnancy and the neonatal period.
Main Methods:
- Review of existing literature on M. hominis prevalence and clinical associations during pregnancy and the neonatal period.
- Analysis of correlations between M. hominis colonization, parity, and pregnancy complications.
- Examination of reported cases of neonatal infections attributed to M. hominis.
Main Results:
- M. hominis is frequently colonized during pregnancy, with increasing prevalence and antibody titers associated with higher parity.
- A significant association exists between M. hominis and postpartum fever, particularly in women with low predelivery antibody titers.
- While neonatal colonization occurs, severe infections like meningitis and pneumonia are rare, and most neonates recover without specific treatment.
Conclusions:
- The precise pathogenic role of Mycoplasma hominis in pregnancy and neonatal outcomes remains uncertain.
- Further research is needed to understand the implications of M. hominis colonization and guide antimicrobial therapy decisions.
- Future studies should consider M. hominis within the context of other genital tract pathogens.