Acute respiratory tract infections in Indian children with special reference to Mycoplasma pneumoniae

A Pandey1, R Chaudhry, N Nisar

  • 1Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi.

Insights

Mycoplasma pneumoniae is a significant cause of acute respiratory tract infections in Indian children. Early diagnosis using rapid methods is crucial for effective treatment of these common childhood infections.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Microbiology

Background:

  • Acute respiratory tract infections (ARTI) are a major cause of childhood illness globally.
  • Identifying the specific microbial aetiology of ARTI is essential for appropriate treatment and management.
  • Mycoplasma pneumoniae is a known pathogen implicated in respiratory infections, but its role in the Indian paediatric population required further investigation.

Purpose of the Study:

  • To investigate the bacterial and Mycoplasma pneumoniae aetiology of acute respiratory tract infections in Indian children under 5 years of age.
  • To evaluate the effectiveness of different diagnostic methods for Mycoplasma pneumoniae detection.
  • To highlight the prevalence of mixed infections in paediatric ARTI.

Main Methods:

  • A prospective study was conducted on 70 Indian children under 5 years old admitted with ARTI.
  • Microbial investigations included bacterial cultures, Mycoplasma pneumoniae antigen detection (indirect immunofluorescence assay), and IgM antibody testing (particle agglutination test).
  • Aerobic bacterial isolates were identified from blood samples.

Main Results:

  • A microbial aetiology was identified in 62.8% of cases.
  • Mycoplasma pneumoniae was the most common pathogen, identified in 30% of children.
  • Aerobic bacteria, including Streptococcus pneumoniae and Staphylococcus aureus, were also isolated, and mixed infections were observed.

Conclusions:

  • Mycoplasma pneumoniae plays a significant role in acute respiratory tract infections among Indian children.
  • Rapid diagnostic techniques for Mycoplasma pneumoniae should be widely adopted for early diagnosis.
  • The study underscores the importance of considering mixed aetiologies in paediatric ARTI for effective therapeutic strategies.

Related Concept Videos

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 III: Complications and Assessment01:30

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...
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...
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...
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...