Contact tracing could be key in halting the spread of hantavirus. Here's how it works

Contact tracing is the public health tool that keeps diseases contained. Health workers reach out to those individuals who were exposed to someone who has a contagious disease to monitor their health and to prevent further spread. lakshmiprasad S/iStockphoto/via Getty Images hide caption toggle caption lakshmiprasad S/iStockphoto/via Getty Images An international team of disease detectives is now racing to connect with the more than two dozen passengers who disembarked the MV Honius cruise ship …