Quantitative Analysis of the Effectiveness of Antigen- and Polymerase Chain Reaction-Based Combination Strategies for Containing COVID-19 Transmission in a Simulated Community

Qiangru Huang, Yanxia Sun, Mengmeng Jia, Ting Zhang, Fangyuan Chen, Mingyue Jiang, Qing Wang, Luzhao Feng, Weizhong Yang

Engineering ›› 2023, Vol. 28 ›› Issue (9) : 234-242.

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Engineering ›› 2023, Vol. 28 ›› Issue (9) : 234-242. DOI: 10.1016/j.eng.2023.01.004
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Quantitative Analysis of the Effectiveness of Antigen- and Polymerase Chain Reaction-Based Combination Strategies for Containing COVID-19 Transmission in a Simulated Community

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Abstract

The number of coronavirus disease 2019 (COVID-19) cases continues to surge, overwhelming healthcare systems and causing excess mortality in many countries. Testing of infectious populations remains a key strategy to contain the COVID-19 outbreak, delay the exponential spread of the disease, and flatten the epidemic curve. Using the Omicron variant outbreak as a background, this study aimed to evaluate the effectiveness of testing strategies with different test combinations and frequencies, analyze the factors associated with testing effectiveness, and optimize testing strategies based on these influencing factors. We developed a stochastic, agent-based, discrete-time susceptible-latent-infectious-recovered model simulating a community to estimate the association between three levels of testing strategies and COVID-19 transmission. Antigen testing and its combination strategies were more efficient than polymerase chain reaction (PCR)-related strategies. Antigen testing also showed better performance in reducing the demand for hospital beds and intensive care unit beds. The delay in the turnaround time of test results had a more significant impact on the efficiency of the testing strategy compared to the detection limit of viral load and detection-related contacts. The main advantage of antigen testing strategies is the short turnaround time, which is also a critical factor to be optimized to improve PCR strategies. After modifying the turnaround time, the strategies with less frequent testing were comparable to daily testing. The choice of testing strategy requires consideration of containment goals, test efficacy, community prevalence, and economic factors. This study provides evidence for the selection and optimization of testing strategies in the post-pandemic era and provides guidance for optimizing healthcare resources.

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COVID-19 / Antigen testing / PCR testing / Testing strategies

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Qiangru Huang, Yanxia Sun, Mengmeng Jia, Ting Zhang, Fangyuan Chen, Mingyue Jiang, Qing Wang, Luzhao Feng, Weizhong Yang. Quantitative Analysis of the Effectiveness of Antigen- and Polymerase Chain Reaction-Based Combination Strategies for Containing COVID-19 Transmission in a Simulated Community. Engineering, 2023, 28(9): 234‒242 https://doi.org/10.1016/j.eng.2023.01.004

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