Related Experiment Video
Updated: Nov 28, 2025

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion
Published on: May 12, 2023
COVID-19 Susceptibility in Bronchial Asthma
Ilan Green1, Eugene Merzon1, Shlomo Vinker1
1Leumit Health Services, Tel-Aviv, Israel; Department of Family Medicine, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
Patients with asthma showed lower susceptibility to COVID-19. This study analyzed COVID-19 testing data, finding a reduced likelihood of positive results in individuals with asthma.
Area of Science:
- Epidemiology
- Infectious Diseases
- Pulmonology
Background:
- Asthma's role in COVID-19 (coronavirus disease 2019) susceptibility is under-researched.
- Respiratory allergies may reduce angiotensin-converting enzyme 2 receptor expression, a key entry point for COVID-19.
Purpose of the Study:
- To assess COVID-19 susceptibility in bronchial asthma patients.
- To determine asthma prevalence in a large cohort tested for COVID-19 using RT-PCR.
Main Methods:
- Retrospective, population-based, cross-sectional study in Israel (February-June 2020).
- Included health maintenance organization enrollees tested for COVID-19.
- Analyzed demographic and clinical characteristics, comparing COVID-19 positive/negative groups and asthma/non-asthma groups.
Main Results:
- 37,469 individuals tested; 6.05% were COVID-19 positive.
- Asthma prevalence was 6.75% in COVID-19 positive and 9.62% in COVID-19 negative groups (P < .001).
- Asthma was negatively associated with COVID-19 positivity (OR, 0.71; 95% CI, 0.58-0.87; P = .001), even after adjusting for confounders.
Conclusions:
- Individuals with pre-existing asthma exhibited reduced susceptibility to COVID-19.
- Asthma may confer a protective effect against SARS-CoV-2 infection.
More Related Videos
08:42Isolating Bronchial Epithelial Cells from Resected Lung Tissue for Biobanking and Establishing Well-Differentiated Air-Liquid Interface Cultures
Published on: May 26, 2023
05:18Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters
Published on: July 12, 2024
Related Concept Videos
Asthma-I: Introduction
Asthma: Pathogenesis and Management
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma-II: Pathophysiology and Classification
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Asthma-III: Symptoms and Complications
Classification of Asthma
Asthma-IV: Diagnostic and Management
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
COPD: Pathogenesis and Clinical Features
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...