Related Experiment Video

Updated: Aug 26, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
11:32

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Published on: February 23, 2014

Viral pneumoniae in children: incidence and aetiology

C A Sinaniotis1

  • 1Second Department of Paediatrics, University of Athens School of Medicine, Athens, Greece. konsinan@med.uoa.gr

Paediatric Respiratory Reviews
|February 26, 2004
PubMed

Insights

Community-acquired pneumonia (CAP) is a common childhood illness. Viruses, particularly respiratory syncytial virus, are the primary cause, often leading to bacterial co-infections.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Microbiology

Background:

  • Community-acquired pneumonia (CAP) is a significant global health concern affecting children across all age groups.
  • The etiology of CAP is diverse, varying with patient age and influenced by advancements in diagnostic technologies.
  • Understanding the causative agents of pediatric pneumonia is crucial for effective treatment and prevention strategies.

Purpose of the Study:

  • To review the current understanding of the etiological spectrum of community-acquired pneumonia in children.
  • To highlight the predominant role of viral pathogens, especially in early childhood.
  • To discuss the incidence and implications of mixed viral and bacterial infections in pediatric CAP.

Main Methods:

  • Literature review of studies on pediatric community-acquired pneumonia.
  • Analysis of etiological data based on patient age and diagnostic methods.
  • Synthesis of findings on viral and bacterial roles in pneumonia pathogenesis.

Main Results:

  • Viruses are identified as the causative agents in up to 90% of pediatric pneumonias, particularly in infants under one year.
  • Respiratory syncytial virus is the most prevalent viral pathogen in young children.
  • Viral infections are complicated by bacterial infections in approximately 30% of cases, indicating a significant proportion of mixed infections.

Conclusions:

  • Viral infections are the leading cause of community-acquired pneumonia in children, with a notable age-dependent prevalence.
  • Mixed viral and bacterial infections are common in pediatric CAP, necessitating further research to clarify their precise roles.
  • Improved diagnostics have enhanced the understanding of pneumonia etiology, yet challenges remain in fully elucidating the interplay between viral and bacterial pathogens.

More Related Videos

A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness12:21

A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness

Published on: September 28, 2022

Related Concept Videos

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 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 II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
Respiratory Syncytial Virus Disease01:29

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
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...
Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...