At 17:00 on August 11, Wen Guoxin, deputy director of the Urumqi Center for Disease Control and Prevention, introduced that nucleic acid testing is the main detection method and judgment standard for confirmed cases of new coronary pneumonia and asymptomatic infections. Since pharyngeal swab collection is not a deep respiratory tract sampling, and the sensitivity of the detection reagents cannot identify all infected persons at one time, in order to be cautious, it is necessary to conduct multiple sampling tests on key areas and key personnel based on the test results. The occult of the new coronavirus is very strong, and different infected people have different detoxification times. Among the cases in Urumqi, two consecutive nucleic acid tests were negative, and they were not positive until the third test. Therefore, repeated tests are necessary.
(Reporter Zhao Yamin edited Lu Jie)
Editor in charge: 【Luo Pan】