Impaired neutralizing antibody responses against the BA1.1, BA.2, and BA.5 Omicron SARS-CoV-2 subvariants in hospitalized adults infected with pre-Omicron variants in Argentina. - Sachithanandham J; Sitaras IA; Albertini RA; Capra RH; Marquez J; Sadino-Vallve GB; Gargantini PR; Cortes PR; Ponce NE; van de Guchte A; Gonzalez-Reiche AS; Olivero NB; et al. (Microbiology spectrum, 2026)