Infectious disease expert on potential Russia plague: lack of information from Russia 'concerning'

The White House is monitoring Russia's potential pneumonic plague as unofficial reports reveal that close to 200 people are now under observation. This comes after the death of a researcher who worked at a Russian lab dedicated to studying the plague and other infectious diseases. Infectious disease and biosecurity expert Dr. Ashish Jha calls out Russia's lack of transparency, telling Erin Burnett, "until we get more information, I think we have to assume that there is something more going on than what we're seeing."