Role of awareness programs on diabetes prevention and control of viral infection: a study of optimal controlKalyan Kumar Pal, Rajanish Kumar Rai, Pankaj Kumar Tiwari and Arvind Kumar MisraEur. Phys. J. Plus, 140 2 (2025) 150DOI: https://doi.org/10.1140/epjp/s13360-025-06063-z