Burden of infant bronchiolitis: data from a hospital network

D Che1, N Caillere, P Brosset

  • 1Institut de Veille Sanitaire, Saint Maurice, France. d.che@invs.sante.fr

Insights

A pilot hospital network in France monitored infant bronchiolitis (a common respiratory infection). The study estimated high hospitalization and prevalence rates, highlighting the network

Area of Science:

  • Pediatrics
  • Epidemiology
  • Public Health Surveillance

Background:

  • Bronchiolitis is a significant cause of infant respiratory illness.
  • Effective surveillance is crucial for understanding disease burden and trends.
  • Existing surveillance methods in France for bronchiolitis were limited.

Purpose of the Study:

  • To evaluate the utility of a pilot hospital emergency department network for bronchiolitis surveillance in France.
  • To estimate the hospitalization rate and prevalence of infant bronchiolitis.
  • To assess the network's effectiveness in capturing the dynamic and burden of the disease.

Main Methods:

  • A 1-year observational study (2007-2008) was conducted.
  • Data was collected from a pilot network of hospital emergency departments in a central French region.
  • Hospitalization rates and prevalence were calculated for infants under one year old.

Main Results:

  • The hospitalization rate for bronchiolitis was 17.7 per 1000 children under one year.
  • Estimated prevalence of bronchiolitis ranged from 17.7% to 34.4% in infants.
  • The pilot network successfully provided data on disease incidence.

Conclusions:

  • A hospital emergency department network is a valuable tool for monitoring infant bronchiolitis.
  • This surveillance approach can effectively estimate the dynamic and burden of bronchiolitis.
  • The findings support the expansion of such networks for public health.

Related Concept Videos

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...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without causing...