VAQTA is a vaccine used to prevent infection by the hepatitis A virus, a highly contagious liver infection. It is an inactivated vaccine, meaning it contains a killed version of the virus, which stimulates the body's immune system to recognize and fight hepatitis A if exposed in the future. VAQTA is typically administered in two doses for long-lasting protection, with the schedule varying by age and specific health recommendations. It is commonly recommended for children, travelers to areas with high rates of hepatitis A, individuals with chronic liver disease, and others at increased risk of infection. By promoting an immune response without causing the disease itself, VAQTA plays a crucial role in preventing hepatitis A infections and their associated health complications.