Simply put, it is to complete three nucleic acid tests within three days, and the time interval between the three nucleic acid tests shall not be less than 24 hours.
People who have lived in prefecture-level cities with local case reports for 7 days will be given "three days and three inspections" after coming to Guangzhou. On the fifth and seventh days, they will be instructed to conduct a nucleic acid test and do a good job in health monitoring.
During the "three days and three inspections" period in the city where the high-risk area is located, household health monitoring will be carried out, and nucleic acid detection will be carried out on the fifth and seventh days respectively, so as to do a good job in health monitoring. The management period starts from leaving the risk area. Other areas of counties (cities, districts and banners) where high-risk areas are located are low-risk areas.
Those who arrive in Guangzhou outside the province should strictly implement the "three days and three inspections" after arriving in Guangzhou.
Nucleic acid detection function:
The substance of nucleic acid detection is the nucleic acid of virus. Nucleic acid detection is to determine whether COVID-19 is infected by detecting whether there is nucleic acid of foreign invasive virus in human 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.