Seroprevalence of Cystic Echinococcosis Using Recombinant Antigen B-ELISA in North Khorasan Province, Northeast of Iran - SHAFIEI, Reza; TAGHASI, Fatemeh; HASHEMI, Seyed Ahmad; PANAHI, Yaser; AREFKHAH, Nasir; OMIDIAN, Mostafa; ARIANFAR, Farzane; ARIANFAR, Farzane; MOSTAFAVI-POUR, Zohreh; SARKARI, Bahador (Iranian Journal of Public Health, 2021)