Nation January is National Slavery and Human Trafficking Prevention Month: What is it, and what are the signs? January 12, 2022 Celina Tebor, USA TODAY Comments Off on January is National Slavery and Human Trafficking Prevention Month: What is it, and what are the signs? The U.S. Department of State estimates as many as 24.9 million adults and children are trapped in some form of human trafficking around the world.