Biovac A Vaccine protects against hepatitis A, a serious liver infection caused by the hepatitis A virus (HAV), that spreads via contact with contaminated food or water. It is made from a weakened strain of HAV. It helps the body build immunity by producing antibodies against the virus, preventing infection. Biovac A Vaccine - Freeze-dried Live Attenuated Hepatitis A Vaccine - Dr Reddy's - Pilcare - Exporter from India to Singapore