BREAKING: Pneumonic plague case in Russia monitored by US officials

Suspected plague outbreak erupts in Russia after scientist dies

Russian 'plague': How worried should we be?

Russian plague researcher death 'cause for focus,' not alarm

Suspected fatal case of pneumonic plague in Russia

Rubio: Russian plague death is 'cause for focus'

Worker at Russian plague lab dies; ‘anti-epidemic measures’ imposed

Russian gov't downplays plague lab worker death; dozens quarantined

Russian report says Siberian plague institute worker fell ill, died of unknown cause

Marco Rubio Says Suspected Russia Plague Outbreak ‘cause for focus’ But Not Alarm

Suspected Pneumonic Plague Outbreak Erupts in Russia After Scientist Dies

Rubio on Russian plague reports: "I don't think it's cause for alarm"