Vi typhoid vaccine produced at the Institute of Vaccine Nha Trang - Da Lat according to the technological procedure of National Institute of Health, and met the specifications of European Pharmacoepia and the requirements of WHO: O-acetyl (m mol/dose): 0,082+/-0,0186. Vi content (g/dose): 27,6+/-2,92. Lot No6 was selected for field trial to determine the safety and immunogenicity of the product
vaccines ; Industry ; Typhoid Fever