Thangaraj JWV, Kumar MS, Kumar CG, Kumar VS, et al. Persistence of humoral immune response to SARS-CoV-2 up to 7 months post-infection: Cross-sectional study, South India, 2020-21. J Infect 2021 May 28. pii: S0163-4453(21)00268.
PMID: 34058261