Related Experiment Video

Updated: Jun 4, 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

Respiratory tract infections in adults

M R Achong

    Canadian Family Physician Medecin De Famille Canadien
    |February 8, 2011
    PubMed

    Insights

    Most upper respiratory infections stem from viruses, making diagnosis difficult. This study details diagnosing pneumonia and differentiates viral, bacterial, and mycoplasma causes, including rare adult epiglottitis.

    Area of Science:

    • Infectious Diseases
    • Pulmonology
    • Microbiology

    Background:

    • Upper respiratory tract infections (URTIs) are frequently viral, yet clinical presentation alone cannot identify the causative agent.
    • Epiglottitis, a severe condition causing upper airway obstruction, can be caused by type B Hemophilus influenzae in adults, mirroring risks seen in children.

    Purpose of the Study:

    • To outline a diagnostic approach for pneumonia.
    • To describe pneumonias specifically caused by viruses, Mycoplasma pneumoniae, and bacteria.

    Main Methods:

    • Clinical findings assessment for URTI diagnosis.
    • Diagnostic strategy for pneumonia.
    • Pathogen-specific pneumonia characterization.

    Main Results:

    • Clinical diagnosis of URTIs is often insufficient to determine the specific pathogen.
    • Hemophilus influenzae type B epiglottitis presents a significant airway obstruction risk in adults, similar to children.
    • Distinct approaches are necessary for diagnosing viral, Mycoplasma, and bacterial pneumonias.

    Conclusions:

    • Accurate pathogen identification for URTIs and pneumonia requires more than clinical assessment.
    • Awareness of adult epiglottitis due to Hemophilus influenzae type B is crucial for timely intervention.
    • Specific diagnostic pathways are essential for managing viral, Mycoplasma, and bacterial pneumonias effectively.

    More Related Videos

    Rapid Detection of Bacterial Pathogens Causing Lower Respiratory Tract Infections via Microfluidic-Chip-Based Loop-Mediated Isothermal Amplification06:11

    Rapid Detection of Bacterial Pathogens Causing Lower Respiratory Tract Infections via Microfluidic-Chip-Based Loop-Mediated Isothermal Amplification

    Published on: March 29, 2024

    Assessing Respiratory Immune Responses to Haemophilus Influenzae06:32

    Assessing Respiratory Immune Responses to Haemophilus Influenzae

    Published on: June 29, 2021

    Related Concept Videos

    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...
    Common Respiratory Disorders01:31

    Common Respiratory Disorders

    Respiratory disorders, a prevalent health concern globally, are generally divided into two primary categories: upper and lower respiratory tract disorders. The categorization is based on the area of the respiratory system they affect.
    Upper respiratory disorders impact the airways above the vocal cords, encompassing areas like the nose, sinuses, and throat. Various conditions fall under this category, including the common cold and allergic rhinitis. These disorders can stem from several causes,...
    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...
    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...
    Anatomy of Respiratory System I: Upper Respiratory Tract01:29

    Anatomy of Respiratory System I: Upper Respiratory Tract

    The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
    Nose and nasal cavity
    The nose and nasal cavity represent the main external openings of the respiratory tract.