Longitudinal changes and risk factors of Opisthorchis viverrini infection after selective praziquantel treatment: evidence from urine antigen assay and fecal examination in an endemic community in Northeast Thailand - Kulthida Y. Kopolrat; Parichart Boueroy; Ratanee Kammoolkon; Opal Pitaksakulrat; Patiwat Yasaka; Chanika Worasith; Phattharaphon Wongphutorn; Chatanun Eamudomkarn; Chompunoot Wangboon; Nattaya Watwiengkam; Watcharin Promkhwan; Paiboon Sithithaworn (PLoS ONE, 2026)