Re-emerging Trichinella seroprevalence in Ban pigs raised by ethnic minorities of Hoa Binh province - Nga Vu Thi; Mayer-Scholl, Anne; Ngoc Pham Thi; Lan Anh Nguyen Thi; Hung Nguyen-Viet; Unger, Fred (National Institute of Veterinary Research, Vietnam, 2019)