IMMUNOGENICITY AND SAFETY OF FULLY LIQUID HEXAVALENT VACCINE GIVEN TO VIETNAMESE INFANTS PREVIOUSLY VACCINATED AT BIRTH WITH HEPATITIS B VACCINE: Dinh Thiem Vu1, Tran Phuong Thuy2, Cédric Radigue3, Dang Quang Nguyen1, Xavier Da Costa4, Siham B’Chir5 and Emmanuel Vidor5. SEATROPH 2019, 50 (6), 1078.