（ECNS） -- Two tubes of nucleic acid sampling for COVID-19 were reported abnormal in Tianshan District of Urumqi， Northwest China‘s Xinjiang Uyghur Autonomous Region， according to Urumqi Epidemic Prevention and Control headquarters。

　　An epidemiological investigation and source tracing has been launched， it was added。

　　The headquarters suggested people to cooperate with nucleic acid testing policies and develop good habits like wearing masks， washing hands frequently， and avoiding gatherings。