another name for hepatitis b vaccine
Twinrix is a vaccine against hepatitis A and hepatitis B, manufactured by GlaxoSmithKline. Twinrix is administered over three doses. The name was created because it is a mixture of two earlier vaccines â Havrix, an inactivated-virus Hepatitis A vaccine, and ENGERIX-B, a recombinant Hepatitis B vaccine.winrix is administered over three doses. The name was created because it is a mixture of two earlier vaccines â Havrix, an inactivated-virus Hepatitis A vaccine, and ENGERIX-B, a recombinant Hepatitis B vaccine.