From IBN Live (Link):
The completion of the first railway linking Tibet to other Chinese regions could fuel the spread of rat-borne diseases such as plague that mainly affect remote areas of northwest China, the state media said on Saturday.
The railway, which will link the Himalayan region with the rest of China when it opens in summer, could carry infected rats and people to more densely populated areas China Daily said.
Quoting State Forestry Administration officials, the daily said that the spread of plague was currently under control because of the lack of rail access to remote affected areas in Tibet, Qinghai and Inner Mongolia.
