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Related Concept Videos

Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Bacterial Phylum Chlamydiae01:29

Bacterial Phylum Chlamydiae

The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic of...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Pneumonia I: Introduction01:29

Pneumonia I: Introduction

Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...
Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:

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Updated: May 26, 2026

A Human Fallopian Tube Model for Investigation of C. trachomatis Infections
09:11

A Human Fallopian Tube Model for Investigation of C. trachomatis Infections

Published on: August 11, 2012

[Chlamydia trachomatis pneumonia: two atypical case reports].

S Bellulo1, E Bosdure, M David

  • 1Unité de médecine infantile et de pneumologie pédiatrique, CHU Timone-Enfants, 264, rue Saint-Pierre, 13385 Marseille cedex 05, France.

Archives De Pediatrie : Organe Officiel De La Societe Francaise De Pediatrie
|December 20, 2011
PubMed
Summary

Chlamydia trachomatis pneumonia can present atypically in infants. Early molecular diagnosis is crucial for identifying this bacterial-like pneumonia in neonates and young infants.

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Forward Genetic Approaches in Chlamydia trachomatis
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Forward Genetic Approaches in Chlamydia trachomatis

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A Human Fallopian Tube Model for Investigation of C. trachomatis Infections
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A Human Fallopian Tube Model for Investigation of C. trachomatis Infections

Published on: August 11, 2012

Forward Genetic Approaches in Chlamydia trachomatis
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Forward Genetic Approaches in Chlamydia trachomatis

Published on: October 23, 2013

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Microbiology

Background:

  • Chlamydia trachomatis is a common cause of neonatal conjunctivitis and pneumonia.
  • Infant pneumonia often presents with bacterial-like symptoms, complicating diagnosis.

Observation:

  • Two infants, aged 29 and 43 days, were hospitalized with pneumonia.
  • One infant had a C. trachomatis infection despite a Cesarean birth, challenging typical transmission assumptions.
  • Both infants presented with significant respiratory distress.

Findings:

  • Molecular methods confirmed Chlamydia trachomatis in nasopharyngeal samples from both infants.
  • The cases highlight that C. trachomatis pneumonia can mimic bacterial pneumonia in infants.
  • Diagnosis required specific molecular detection of the pathogen.

Implications:

  • Clinicians should consider Chlamydia trachomatis in infants presenting with bacterial-like pneumonia.
  • Systematic screening for C. trachomatis is recommended for infants under 3 months with pneumonia symptoms.
  • Timely diagnosis and treatment of C. trachomatis pneumonia can prevent severe respiratory complications.