Original ResearchPublished 2 October 2026Genetic algorithm–optimized SEIR-V: robust parameter estimation for wastewater-based infectious disease modeling across multiple regionsBin Li · Sadaruddin Chachar · Chenhao Zhang · Zhang Rui · Nuoting Lu · Jieren Liu · Badaruddin Chachar · Zaid Chachar · Feijuan Huang · Yuanzhe CaiFrontiers in Waterdoi 10.3389/frwa.2026.1874972