When Dr. Su Wang was in medical school, she donated blood. That's when she learned she was infected with hepatitis B, a virus that attacks the liver and can lead to cancer and death decades later.

"I was 18, healthy, in college," she said. "And suddenly I had a chronic illness I didn't even know about."

Born in Florida in 1975, Wang grew up before the hepatitis B vaccine was routinely given to newborns. For years, she assumed she had been infected by her mother, only to discover later that both her parents were negative. "It turns out my grandparents, who cared for me after birth, probably passed it to me," she said. "That's how easy this virus spreads — not from some exotic risk factor, just family."

Today, Wang is the medical director for viral hepatitis programs at RWJBarnabas Health

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