What is the name of the vaccine used to prevent Hepatitis B?

• A. Hepatitis B vaccine
• B. Magnesium sulfate
• C. Morphine
• D. Digoxin

Answer: (A)

This question tests your ability to identify the vaccine that prevents a specific infection. The correct answer is the Hepatitis B vaccine. This vaccine introduces the Hepatitis B surface antigen to stimulate the immune system to produce antibodies against HBV, so if exposed later, the body can fight off the infection. It’s given as a series of injections (often starting at birth or in early infancy, with follow-up doses) to build lasting protection. It’s recommended for all newborns and for people at higher risk, such as healthcare workers or individuals with exposure risk. The other options are not vaccines for Hepatitis B; magnesium sulfate, morphine, and digoxin are medications used for other conditions (pre-eclampsia/tocolysis, pain relief, and heart conditions, respectively).