This heroin vaccine might solve part of our growing opioid addiction problems

Heroin needle found in the gutter. Credit: Wikimedia Commons. An estimated 9.2 million people in the world use heroin, and the United States is one of the hardest hit countries. In the last decade alone, heroin users have grown fivefold with young, white males being the most vulnerable group. Since the year 2000, the number of…