Case-area targeted interventions (CATI) among household contacts and neighboring households after identifying cholera hotspot: a study protocol for the effectiveness of Oral Cholera Vaccine (OCV) and its potential impact on cholera control - Imam Tauheed; Afroza Akter; Md. Taufiqur Rahman Bhuiyan; Md. Shahinur Rahaman; Al Amin Ahmed Shakil; Sadia Sabrina; Istiaque Hossain; Hassan Afrad; Prasanta Kumar Biswas; Md. Amiruli Islam Bhuiyan; Sadia Isfat Ara Rahman; Marjahan Akhtar; et al. (BMC Public Health, 2026)