The FDA has approved an accelerated dosing schedule for an inactivated hepatitis A vaccine and recombinant hepatitis B vaccine (Twinrix, GlaxoSmith-Kline): three doses given within three weeks, followed by a booster dose at 12 months.
As the only hepatitis A and hepatitis B combination vaccine available in the U.S., Twinrix will now be given at zero, seven, and 21 to 30 days, followed by the booster dose at one year.
The vaccine was first approved for adults older than 18 years of age in May 2001 on a dosing schedule of zero, one, and six months. canadian cialis
Hepatitis A, which can be fatal, is spread by close personal contact and by eating food or drinking water contaminated with the hepatitis A virus. Hepatitis B is transmitted through infected blood or body fluids.