Community-acquired Pneumonia in Bangladeshi Children Under Five: Pathogen Prevalence, Resistance Trends, and

Sanchita Kar1,2, Sharmin Aktar Mukta1, Zannat Kawser1

  • 1Acute Respiratory Infections Research and Interventions, Mérieux Foundation, France.

Insights

Childhood pneumonia in Bangladesh shows high rates of antibiotic resistance and a prevalence of non-vaccine serotypes. These findings emphasize the need for updated pneumococcal surveillance and antimicrobial resistance strategies.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Public Health

Background:

  • Community-acquired pneumonia (CAP) is a major cause of mortality in children globally.
  • Diverse etiologies contribute to CAP, necessitating region-specific data for effective interventions.
  • Understanding local epidemiology is crucial for optimizing treatment and vaccination strategies.

Purpose of the Study:

  • To investigate the epidemiological characteristics of childhood CAP in Dhaka, Bangladesh.
  • To identify common pathogens and assess antimicrobial resistance patterns.
  • To inform public health strategies for CAP prevention and management.

Main Methods:

  • A case-control study involving 226 children under 5 with CAP and 201 controls was conducted in Dhaka.
  • Pathogen detection utilized blood and nasopharyngeal swabs.
  • Antibiotic susceptibility testing, pneumococcal serotyping, and inflammatory marker analysis (C-reactive protein, procalcitonin) were performed.

Main Results:

  • No bacteremic CAP cases were found. Streptococcus pneumoniae, RSV, SARS-CoV-2, and influenza A/B were significantly associated with CAP.
  • Over 90% of pneumococcal isolates were non-PCV10 serotypes, with serotype 19A predominant.
  • High rates of multidrug resistance were observed in S. pneumoniae and Staphylococcus aureus (including MRSA).

Conclusions:

  • Childhood CAP in Dhaka is characterized by high antimicrobial resistance and a predominance of non-PCV10 pneumococcal serotypes.
  • Findings highlight the urgent need for enhanced pneumococcal surveillance to guide vaccine policy.
  • Strengthened approaches to combat antimicrobial resistance are critical for improving child health outcomes.
Abstract

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...
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:
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...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...