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Updated: Aug 18, 2025

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
Published on: November 5, 2021
SEVERE CORONAVIRUS DISEASE 2019: FROM PATHOGENESIS TO THERAPY
Jean-Marc Cavaillon1, Antonio Artigas2, Andreas Barratt-Due3
1National Research Agency (ANR), Paris, France.
Treating severe COVID-19 requires a multifaceted approach, combining antiviral drugs and immunomodulators like corticosteroids and anti-cytokine therapies. Patient stratification is key for effective treatment timing and outcomes in this viral sepsis.
Area of Science:
- Infectious Diseases
- Immunology
- Critical Care Medicine
Background:
- Severe COVID-19 presents as a viral sepsis with subsequent autoinflammatory responses.
- Therapeutic strategies for bacterial sepsis have informed COVID-19 treatment approaches.
- Antiviral strategies are crucial alongside immunomodulatory treatments.
Purpose of the Study:
- To review current therapeutic strategies for severe COVID-19.
- To discuss the role of antivirals, corticosteroids, and targeted immunotherapies.
- To highlight the importance of patient stratification and treatment timing.
Main Methods:
- Literature review and synthesis of current research on COVID-19 therapies.
- Analysis of immunomodulatory and antiviral treatment options.
- Discussion of stem cell therapy and complement inhibition (anti-C5a).
Main Results:
- Severe COVID-19 involves both viral replication and an overactive immune response.
- Combinations of antivirals, corticosteroids, and cytokine inhibitors (anti-IL-1, anti-IL-6) show promise.
- Stem cell therapy and complement inhibition are being investigated.
Conclusions:
- Effective treatment of severe COVID-19 necessitates a combination of antiviral and immunomodulatory therapies.
- Patient stratification and precise timing of interventions are critical for successful outcomes.
- Further research is needed to optimize treatment protocols for this complex disease.
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