Career
In December 2013, it was revealed that he had added human blood components to rabbit blood to make it appear as though a vaccine he was working on had exhibited anti-Human Immunodeficiency Virus activity. As a result of this apparent positive result, Han and his team received approximately $19 million in grant money from the National Institutes of Health. After Han"s fraud came to light, James Bradac, who oversees Acquired Immune Deficiency Syndrome grants for the National Institutes of Health, called it "the worst case of research fraud he’d seen in his more than two decades at the agency," according to the New York Daily News.
In June 2014, as a result of his receiving grant money due to falsified results, Han was indicted on four federal felony counts of making false statements.
Han pleaded guilty in federal court in February 2015. On 1 July 2015 Han was sentenced to 57 months imprisonment for fabricating and falsifying data in Human Immunodeficiency Virus vaccine trials.
He was also fined United States$7.2 million and will be subject to three years of supervised release after he leaves prison.