“Two Recovered COVID-19 Cases Testing Positive Again for SARS-CoV-2 After Discharge in Hanoi, Vietnam” (2020) Archives of Clinical and Medical Case Reports, 4(5), pp. 766–773. Available at: https://fortunejournals.org/ojs/index.php/acmcr/article/view/22381 (Accessed: 11 September 2026).