BEIJING - No pathogenic bacteria were detected in milk that sent young students to a hospital for treatment in a city of Northwest China's Shaanxi province, local food safety officials said on Tuesday.

On the morning of April 22, as many as 251 children at the Yuhe Town Central Primary School, in Yulin city's Yuyang district, fell ill after drinking school milk produced by the Mengniu Dairy Group.

By Saturday, the students had been discharged from the hospital.