ABSTRACT
Description: Twinrix Adult is a combined vaccine consisting of two separately marketed vaccines: Havrix Adult, containing inactivated hepatitis A virus, and Engerix-B, a recombinant vaccine containing the purified hepatitis B surface antigen (rHBsAg). Twinrix Adult is presented as a suspension in vials or in prefilled syringes for intramuscular administration. Each dose contains 720 ELISA units of inactivated hepatitis A and 20 µg rHBsAg in a final volume of 1.0 ml.
