Hours ticked by on Saturday as 50-year-old Lu Yuejin struggled to get past the police checkpoint on the bridge over the Yangtze river and out of Hubei province, which is on virtual lockdown as China scrambles to control a new coronavirus outbreak.

Lu, a farmer from a village on the Hubei province side of the bridge, was trying to gain passage for her daughter, 26-year-old Hu Ping, who has leukemia. She has been unable to receive a second round of chemotherapy treatment in the overwhelmed hospitals of provincial capital Wuhan, the epicenter of the viral outbreak.

"My daughter needs to go to hospital in Jiujiang," she said at the checkpoint. "She needs to have her treatment. But they won't let us through."