An international multicentre observational cohort study of the clinical presentation of acute arboviral infection (ARIA): a study protocol - Josephine Bourner; Giselle Duarte; Leonardo S. L. Bastos; Timo Tolppa; Janice Caoili; Madiha Hashmi; Jose Cerbino-Neto; Priscilla Soares Filgueiras; Arishay Hussaini; Elise Pesonel; John Amuasi; Joseph Bonney; et al. (BMC Infectious Diseases, 2026)