Plague fears grip Russia after lab worker dies as more than 60 quarantined

The US is closely monitoring the case of a lab worker who died of a possible plague in Russia. More than 60 people have been placed under quarantine after the sudden death of Darya Shipilova. The 28-year-old reportedly fell ill shortly after breaking a test tube at a plague research institute in Siberia. Russian authorities claim she died of pneumonia. The US president says his country will help.