World Hepatitis Day: How a 19th-Century Vaccine Scare Led to Hepatitis Discovery
Jaundice was documented in ancient texts, but its underlying cause eluded scientists for thousands of years. Clues began emerging through outbreaks linked to contaminated vaccines and wartime medical practices, which revealed that hepatitis could spread via infected materials. The pivotal breakthrough came when scientist Baruch S. Blumberg identified the Australia antigen, transforming the diagnosis and prevention of hepatitis B. This discovery paved the way for identifying additional hepatitis viruses and understanding the disease more broadly. Today, millions worldwide benefit from safer blood transfusions and effective vaccines developed through decades of persistent research.
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