How to check key control areas

At present, there are 43 key epidemic control areas in China:

Fuqing City, Fuzhou City, Fujian Province; Yongfeng Street, Songjiang District, Shanghai; Alashankou City, Bozhou, Xinjiang; Beilun District, Ningbo City, Zhejiang Province; Huarong District, Chongyang County, Dongbao District and Duodao District of Ezhou City, Hubei Province, Jiangxia District, Hongshan District, caidian district, Qiaokou District and Economic Development Zone of Jingmen City, Tuanfeng County of Huanggang City; Weidu District, Xuchang City, Henan Province.

Zhengyang County, suiping county, Xiping County, Huiji District, Jinshui District, Economic Development Zone, xinmi city, xinzheng city, Guancheng District, Xingyang City, Erqi District, Weishi County, Kaifeng City, Yucheng County, Shangqiu City, liangyuan district, Suiyang District, and urban-rural integration demonstration zone; Shifeng District, Hetang District, Yunlong Demonstration Zone and Zhangjiajie City, Zhuzhou City, Hunan Province.

Jiangdu District, Guangling District, Hanjiang District and Hanjiang District Economic and Technological Development Zone, Yangzhou City, Jiangsu Province; Yancun Town, Fangshan District, Beijing, Longzeyuan Street and Huilongguan Street, Changping District; Ruili City, Yunnan Province. Those who come (return) to Liaoyang in the above-mentioned areas shall report to their communities (villages) for centralized and isolated medical observation.

The first nucleic acid test was completed within 24 hours, and the isolation period was 14 days after coming to Liaoyang, during which two nucleic acid tests were carried out.

The substance of nucleic acid detection is the nucleic acid of virus. Nucleic acid detection is to determine whether the patient is infected by COVID-19 by detecting whether there is nucleic acid of foreign invasive virus in respiratory tract samples, blood or feces. Therefore, once the nucleic acid is "positive", it can prove that there is a virus in the patient.

After COVID-19 infects the human body, it will first reproduce in the respiratory system, so we can judge whether the human body is infected with the virus by detecting the virus nucleic acid in sputum and nasopharyngeal swab. Therefore, positive nucleic acid detection can be used as a new standard for the diagnosis of novel coronavirus infection.

All living things contain nucleic acids, including DNA and RNA. Novel coronavirus is a virus containing only RNA, and the specific RNA sequence in the virus is a sign to distinguish the virus from other pathogens.

After the appearance of novel coronavirus, Chinese scientists completed the analysis of the whole genome sequence of novel coronavirus in a very short time, and found the specific nucleic acid sequence in novel coronavirus by comparing with the genome sequences of other species. If novel coronavirus's specific nucleic acid sequence can be detected in patients' samples during clinical laboratory testing, it should be suggested that patients may be infected by novel coronavirus.