Genomic evolution of SARS-CoV-2 delta variants pre- and post-omicron emergence using alignment-free machine learning models - Sathish Sankar; Kaushika Anandharaman; Pradeesh Selvam; Aswini Jayaraman; Deepak Jayakumar; Pachamuthu Balakrishnan; Marie Larsson; Vijayakumar Velu; Sivadoss Raju; Esaki M. Shankar (PLoS ONE, 2026)