A second man has died of pneumonic plague in a remote part of north-western China where thousands of people have been quarantined.
The victim was identified by Chinese state media as a neighbour of the first victim, a herdsman aged 32 in Ziketan, near Xinghai in Qinghai Province.
Health officials in Qinghai have been concerned about pneumonic plague for some time.
In Febuary, they said they had sent out 55 teams across the province to help monitor and control the disease.
One Chinese media report said this was the third outbreak of the disease in Qinghai within the last 10 years.
According to the World Health Organization, pneumonic plague is the most virulent and least common form of plague.
Untreated, it has a very high case-fatality ratio, the WHO says.
The WHO was informed on Saturday of the outbreak but has not been asked for help.
BBC NEWS | Asia-Pacific | Second plague death in west China