The move appears aimed at supporters of World Uyghur Congress president and former political prisoner Rebiya Kadeer.
'Religious extremism' is seen as a greater danger than the spread of the disease, sources say.
Questionnaire asks children to reveal which relatives pray, what they wear and who has facial hair.
Observers say the legislation is aimed at the further suppression of the Muslim Uyghur minority.
Residents are urged to watch for 'Uyghurs from Xinjiang' and report them to authorities as the city prepares for a major international gathering.
Uyghur herder: “We are forced to move, our village and heritage is going to vanish without a trace.”
Police arrested some on charges of ‘instigating ethnic-hatred’ and ‘separatism’ in the run-up to the Muslim holy month of Ramadan.
Authorities say the Aksu resident died of a heart attack, though family members and others believe he was tortured.
Government workers pass out water bottles, force others to eat and drink in front of them.
Police in China's Ili prefecture near the Kazakh border issue new restrictions on travel documents.
Authorities deny allegations that they beat the Uzbek national while holding him for drug possession.
Seventeen Uyghurs are detained over 'pro-Ramadan' propaganda, an exile group says.
Arrested Uzbek man claims he was framed for helping the Uyghur suspects.
Sources say the deadly altercation started when a guard attempted to prevent a juvenile inmate from praying.
Refugees held at an immigration center say they would rather die of starvation than return to China.
Patigul Ghulam, detained after discussing her son’s case with RFA in 2014, was accused of leaking state secrets.
Family says youngster was on a job hunt as two other teenagers are also convicted of seeking to illegally depart the country.