Concept-Grounded Detection of Vaccine Misinformation in Multimodal Content Using Interpretable Vision-Language Models. - Laxmi Thapa; Aryaman Jain; Lakshmojee Koduru; Surabhi Adhikari; Junaid Rashid; Jungeun Kim; Surendrabikram Thapa; Usman Naseem (WWW (Companion Volume), 2026)