Risk factors and immunological characteristics of SARS-CoV-2 RNA re-positivity in convalescent COVID-19 Patients: A retrospective study
Li Li, Xin Zhang, Jingtong Fan, Jiaran Fan, Junxiao Du, Huimin Yan, Erhei Dai, Huixia Gao, Aidong Feng
This study identifies risk factors and immunological features associated with SARS-CoV-2 RNA re-positivity in recovered COVID-19 patients, finding CD8+ T-cell levels as an independent risk factor.
bioRxiv · Sep 17, 2026 · PreprintImmunology