US reacts as Russia races to contain lab leak News.com.auUS closely monitoring case of lab worker who ‘possibly’ died of plague in Siberia, says Rubio The GuardianRussia plague: What we know about the suspected case reportedly linked to a lab worker’s death CNBCWorry as Russia denies plague outbreak News.com.au‘Concerning’ death of Russian ‘plague’ laboratory employee being monitored by US, European officials ABC News & Headlines – Australian Broadcasting Corporation