Related Experiment Video
Updated: Aug 23, 2025

Author Spotlight: Studying Host-Virus Interactions with Pseudotyped Viruses
Published on: November 21, 2023
Evaluation of immunoprotection against coronavirus disease 2019: Novel variants, vaccine inoculation, and
Congshan Jiang1, Kaichong Jiang1, Xiaowei Li2
1National Regional Children's Medical Center (Northwest), Key Laboratory of Precision Medicine to Pediatric Diseases of Shaanxi Province, Xi'an Key Laboratory of Children's Health and Diseases, Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Affiliated Children's Hospital of Xi'an Jiaotong University, Xi'an, 710003, China.
Abstract:
The strikingly rapidly mutating nature of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) genome has been a constant challenge during the coronavirus disease 2019 (COVID-19) pandemic. In this study, various techniques, including reverse transcription-quantitative polymerase chain reaction, antigen-detection rapid diagnostic tests, and high-throughput sequencing were analyzed under different scenarios and spectra for the etiological diagnosis of COVID-19 at the population scale. This study aimed to summarize the latest research progress and provide up-to-date understanding of the methodology used for the evaluation of the immunoprotection conditions against future variants of SARS-CoV-2. Our novel work reviewed the current methods for the evaluation of the immunoprotection status of a specific population (endogenous antibodies) before and after vaccine inoculation (administered with biopharmaceutical antibody products). The present knowledge of the immunoprotection status regarding the COVID-19 complications was also discussed. Knowledge on the immunoprotection status of specific populations can help guide the design of pharmaceutical antibody products, inform practice guidelines, and develop national regulations with respect to the timing of and need for extra rounds of vaccine boosters.
Insights
This study evaluates diagnostic methods for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and reviews immunoprotection status against COVID-19 variants. Understanding population immunity guides vaccine strategies and booster recommendations.
Area of Science:
- Virology
- Immunology
- Public Health
Background:
- The rapid mutation of SARS-CoV-2 poses challenges for COVID-19 diagnosis and control.
- Accurate population-scale diagnosis is crucial for managing the pandemic.
- Understanding immunoprotection is key to addressing future SARS-CoV-2 variants.
Purpose of the Study:
- To analyze diagnostic techniques for COVID-19 at a population scale.
- To review methods for evaluating immunoprotection against SARS-CoV-2 variants.
- To discuss the current knowledge of population immunoprotection status.
Main Methods:
- Analysis of reverse transcription-quantitative polymerase chain reaction (RT-qPCR).
- Evaluation of antigen-detection rapid diagnostic tests (Ag-RDTs).
- Assessment of high-throughput sequencing (HTS) for etiological diagnosis.
Main Results:
- Various diagnostic techniques were assessed for population-scale COVID-19 diagnosis.
- Methods for evaluating endogenous and vaccine-induced antibody status were reviewed.
- Current understanding of immunoprotection against COVID-19 complications was discussed.
Conclusions:
- Knowledge of population immunoprotection status is vital for guiding vaccine development and policy.
- This understanding can inform the design of biopharmaceutical antibody products.
- Findings support evidence-based guidelines for vaccine boosters and national regulations.
Related Concept Videos
Vaccinations
Immune Response Against Viral Pathogens
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Tumor Immunotherapy
Immunological Memory
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
Pneumonia III: Complications and Assessment

