The hepatitis B vaccine efficacy trial

The hepatitis B vaccine efficacy trial tested how well the vaccine protects people from hepatitis B, a serious liver infection. Researchers gave the vaccine to a group of volunteers and compared infection rates with a group that did not receive the vaccine. The results showed that vaccinated individuals had significantly lower rates of hepatitis B, demonstrating the vaccine's effectiveness in preventing the disease. The trial helped confirm that the vaccine is a safe and reliable way to protect against hepatitis B, which can lead to severe liver problems and even cancer.