Is asthma an exclusionary condition for SARS-CoV-2 infection in China? -the relationship between asthma and COVID-19

J Asthma. 2021 Oct;58(10):1337-1339. doi: 10.1080/02770903.2020.1789873. Epub 2020 Aug 4.

Abstract

Objective: To investigate the relationship between asthma and COVID-19.

Methods: We searched the existing literature and researches to analyze the possible reasons.

Results: The possible reasons for the very low COVID-19 infection in asthma patients in China may be as follows: the expression of ACE2 in asthma patients is relatively low; the use of ICS in asthma patients may have protective effect; data bias and ethnic differences are also possible reasons, too.

Conclusion: The relationship between asthma patients and COVID-19 has not been completely clear, which needs further study.

Keywords: COVID-19; China; ACE2; ICS; Mechanisms; SARS-Cov-2; TMPRSS2; asthma; epidemiology; infection; relationship.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Inhalation
  • Angiotensin-Converting Enzyme 2 / metabolism
  • Anti-Inflammatory Agents / administration & dosage
  • Asthma / drug therapy
  • Asthma / epidemiology*
  • Asthma / immunology
  • Asthma / pathology
  • COVID-19 / epidemiology*
  • COVID-19 / immunology
  • COVID-19 / prevention & control
  • COVID-19 / virology
  • China / epidemiology
  • Comorbidity
  • Disease Susceptibility / immunology
  • Glucocorticoids / administration & dosage
  • Humans
  • Incidence
  • Lung / immunology
  • Lung / pathology
  • Lung / virology
  • Risk Assessment / statistics & numerical data
  • Risk Factors
  • SARS-CoV-2 / immunology
  • SARS-CoV-2 / pathogenicity*
  • Serine Endopeptidases / metabolism

Substances

  • Anti-Inflammatory Agents
  • Glucocorticoids
  • ACE2 protein, human
  • Angiotensin-Converting Enzyme 2
  • Serine Endopeptidases
  • TMPRSS2 protein, human