As the COVID-19 pandemic continues to ravage the globe, many nations have started to relax stringent restrictions in an effort to restart the economy. While Member States of the European Union have approached reopening without the use of antibody testing for COVID-19, such testing may be central to a long-term, sustainable strategy for international travel, employment, and the allocation and monitoring of vaccines. As the use of antibody testing to dictate the enjoyment of individual freedom remains highly controversial, we describe its use in the context of three case studies (return to the workplace, travel and vaccination), applying the substantive legal balancing entailed in the proportionality principle. Differential treatment of individuals based on COVID-19 antibody test results can be justified through the proportionality principle, which offers a sound dividing line between a reasonable and legitimate response and an unjust and discriminatory response.

中文翻译：

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将比例原理应用于COVID-19抗体测试。

随着COVID-19大流行继续肆虐全球，许多国家已开始放宽严格的限制，以恢复经济。尽管欧洲联盟成员国已在不使用COVID-19抗体测试的情况下重新开放，但这种测试对于国际旅行，就业以及疫苗分配和监控的长期，可持续战略可能是至关重要的。由于使用抗体测试来指示个人自由的享受仍然存在很大争议，因此，我们在三个案例研究（返回工作场所，旅行和疫苗接种）的背景下描述了抗体测试的应用，并应用了比例原则中所包含的实质性法律平衡。可以通过比例原理证明基于COVID-19抗体测试结果对个体的区别对待，