Related Experiment Video
Updated: Dec 9, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
Published on: November 10, 2023
The Impact of Pre-existing Comorbidities and Therapeutic Interventions on COVID-19
Lauren A Callender1,2, Michelle Curran1,2, Stephanie M Bates1,3
1Immunotoxicology, Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Cambridge, United Kingdom.
Insights
Individuals with pre-existing comorbidities face higher COVID-19 mortality risks due to immune dysfunction. Treatments for these conditions and COVID-19 present complex challenges for patients and healthcare systems.
Area of Science:
- Immunology
- Infectious Diseases
- Public Health
Background:
- Pre-existing comorbidities significantly increase mortality risk in COVID-19 patients.
- Comorbidities can impair immune responses to SARS-CoV-2 infection.
- Therapies for comorbidities complicate COVID-19 treatment strategies.
Purpose of the Study:
- To review immune dysfunction in SARS-CoV-2 infection.
- To analyze the impact of comorbidities on COVID-19 development and progression.
- To explore therapeutic challenges in co-infected patients.
Main Methods:
- Literature review of immune responses to SARS-CoV-2.
- Analysis of comorbidity effects on COVID-19 pathogenesis.
- Examination of drug interactions and treatment limitations.
Main Results:
- Comorbidities alter immune system function, worsening COVID-19 outcomes.
- Underlying disease mechanisms and common medications exacerbate viral progression.
- Limited treatment options exist for COVID-19 in patients with comorbidities.
Conclusions:
- Immune dysfunction is a key factor in severe COVID-19 among those with comorbidities.
- Managing COVID-19 in patients with pre-existing conditions requires careful consideration of disease and drug interactions.
- Long-term therapeutic strategies need to address these complex patient needs.
Abstract:
Evidence from the global outbreak of SARS-CoV-2 has clearly demonstrated that individuals with pre-existing comorbidities are at a much greater risk of dying from COVID-19. This is of great concern for individuals living with these conditions, and a major challenge for global healthcare systems and biomedical research. Not all comorbidities confer the same risk, however, many affect the function of the immune system, which in turn directly impacts the response to COVID-19. Furthermore, the myriad of drugs prescribed for these comorbidities can also influence the progression of COVID-19 and limit additional treatment options available for COVID-19. Here, we review immune dysfunction in response to SARS-CoV-2 infection and the impact of pre-existing comorbidities on the development of COVID-19. We explore how underlying disease etiologies and common therapies used to treat these conditions exacerbate COVID-19 progression. Moreover, we discuss the long-term challenges associated with the use of both novel and repurposed therapies for the treatment of COVID-19 in patients with pre-existing comorbidities.
More Related Videos
Related Concept Videos
Therapeutic Drug Monitoring: Affecting Factors
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
COPD: Management Using Bronchodilators and Corticosteroids
Chronic Obstructive Pulmonary Disease-V: Management
Smoking Cessation
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...
Pharmacokinetics: Drug–Food and Drug–Viral Interactions

