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Immune Responses in Patients with COVID-19: An Overview
Abstract:
Since late 2019, the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection has resulted in more than 143 million confirmed infections and more than 3 million deaths worldwide (as of publication time). In this article, we discuss current knowledge of immune responses that confer protection to more than 80% of the people who have been infected and possible mechanisms by which the virus escapes immune surveillance in people who develop severe disease and those who die from the disease. We also discuss the differences in the immune responses by which, in most children, the infection results in only mild disease, although causing severe disease in some adults. Understanding these differences in both the innate and adaptive immune responses among these people can lead to the development of biotherapeutic treatment modalities that could modulate immune responses to offer protection against SARS-CoV-2 and block the ability of the virus to cause severe disease or death in humans. [.
Insights
This study examines immune responses to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), focusing on protective immunity and viral immune escape mechanisms. Understanding these immune differences may lead to new biotherapeutics for COVID-19.
Area of Science:
- Immunology
- Virology
- Infectious Diseases
Background:
- Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has caused a global pandemic with millions of infections and deaths.
- Immune responses play a critical role in determining COVID-19 severity, ranging from mild illness to fatal outcomes.
- Variations in immune responses are observed between children and adults, influencing disease progression.
Purpose of the Study:
- To review current knowledge on immune responses conferring protection against SARS-CoV-2.
- To explore mechanisms of viral immune escape in severe and fatal COVID-19 cases.
- To understand differential immune responses in children versus adults for therapeutic development.
Main Methods:
- Review of existing literature on SARS-CoV-2 immunology.
- Analysis of innate and adaptive immune responses in different patient groups.
- Identification of immune evasion strategies employed by the virus.
Main Results:
- Over 80% of infected individuals develop protective immunity.
- Specific immune escape mechanisms contribute to severe disease and mortality.
- Significant differences exist in innate and adaptive immunity between children and adults with SARS-CoV-2 infection.
Conclusions:
- Understanding immune response variations is key to combating COVID-19.
- Targeting immune modulation could lead to effective biotherapeutic treatments.
- Biotherapeutics may protect against SARS-CoV-2 infection and prevent severe outcomes.
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