Donald Trump has weighed in on the death of a Russian laboratory worker who was reportedly exposed to the highly contagious pneumonic plague, describing it as "a rough disease" that humanity "used to be able to control".
Darya Shipilova, a 28-year-old employee at the Anti-Plague Research Institute in Shelekhov, Siberia, died last week after accidentally breaking a test tube containing the pathogen, local media have reported.