U.S. presses Russia for answers on plague lab worker’s death

The United States is demanding more information from Russia about the death of a worker at a Siberian plague research lab amid reports she may have died of pneumonic plague. Russian officials say she died of pneumonia and that they notified the World Health Organization, but they have not linked her death to the lab. FOX’s Caroline Shively reports on the push for transparency and questions surrounding the laboratory’s work and reported quarantines.