[Frequency of seroreactors to Legionella among the patients with pulmonary infections]

N Wang1

  • 1Department of Epidemiology, Nanjing Railway Medical College.

Insights

Legionella infection was detected in 11% of adult pulmonary infection patients and 5.45% of children with atypical pneumonia. This study highlights the prevalence of Legionella in respiratory infections.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Epidemiology

Context:

  • Prospective study conducted in community hospitals in Benghu and a children's hospital in Nanjing.
  • Investigated adult patients with pulmonary infections and children with atypical pneumonias.
  • Included healthy control groups for comparison.

Purpose:

  • To determine the prevalence of Legionella infection in patients with pulmonary infections.
  • To measure antibody titers against specific Legionella serogroups (Lpi-8, Lm, Ld, Lg).
  • To diagnose legionellosis based on serological, clinical, and radiographic criteria.

Summary:

  • Antibodies to Legionella were measured using the micro-agglutination test.
  • Seroconversion or high static antibody titers indicated Legionella infection.
  • Approximately 11% of adult patients and 5.45% of pediatric patients showed evidence of Legionella infection.

Impact:

  • Provides data on the prevalence of Legionella in specific patient populations.
  • Contributes to understanding the epidemiology of legionellosis in different geographic regions.
  • Informs clinical diagnosis and public health strategies for respiratory infections.

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 II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
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:
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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 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...