From the UK Guardian:
Chinese city sealed off after bubonic plague death
A Chinese city has been sealed off and 151 people have been placed in quarantine since last week after a man died of bubonic plague, state media said.
The 30,000 residents of Yumen, in the north-western province of Gansu, are not being allowed to leave, and police at roadblocks on the perimeter of the city are telling motorists to find alternative routes, China Central Television (CCTV) said.
A 38-year-old man died last Wednesday, the report said, after he had been in contact with a dead marmot, a small furry animal related to the squirrel. No further plague cases have been reported.
CCTV said officials were not allowing anyone to leave. The China Daily newspaper said four quarantine sectors had been set up in the city.
"The city has enough rice, flour and oil to supply all its residents for up to one month," CCTV added. "Local residents and those in quarantine are all in stable condition." No further cases have been reported.
Strikes me as a bit strange for them to be quarantining the entire city because of one fatality.