# An Unusual Case of Citrobacter koseri Infection During Pregnancy at 27 Weeks: A Case Report and Literature Review

## TL;DR

A pregnant woman's asymptomatic Citrobacter koseri infection was successfully treated with antibiotics, preventing harm to mother and baby.

## Contribution

Highlights effective antimicrobial stewardship in managing a rare pregnancy infection.

## Key findings

- Ceftazidime eradicated Citrobacter koseri without maternal or fetal complications.
- Multidisciplinary care prevented neonatal CNS complications and vertical transmission.
- Healthy term delivery occurred with normal Apgar scores.

## Abstract

Early prenatal screening at 26 + 6 weeks detected
Citrobacter koseri
vaginal colonization in an asymptomatic high‐risk gravida. Culture‐guided IV ceftazidime (susceptible per CLSI testing) eradicated the pathogen without maternal/fetal compromise. Multidisciplinary management prevented vertical transmission, neonatal CNS complications, and yielded a healthy term delivery (Apgar 9/10). Emphasizes susceptibility‐directed antimicrobial stewardship for optimal outcomes in rare pregnancy infections.