On November 23, Zhang Yi, deputy director and spokesman of the Guangzhou Municipal Committee of Health and Health, introduced at a press conference of the epidemic prevention and control that as of the 22nd, 19 squares have been used in Guangzhou, with a total of more than 11,000 people.

Is this batch of people still contagious? Will there be a sequelae if it will be resumed?Focusing on the concerns of the citizens, the south+reporters interviewed Chongyu Tian, a professor of infection science and science of the third hospital affiliated to Sun Yat -sen University, and Chongyu Tian, the chief team of the Huangpu Fang Cavigant Hospital in Guangzhou.

Out offers are basically not contagious

Southern+: Is there still contagious personnel from the cabin?

Chongyu Tian: The infectious size of the new crown infection can be judged according to the level of CT value detection of the nucleic acid.

The nucleic acid molecular weight of the new coronal virus is very small, and it needs to be continuously copied to achieve the amount that the instrument can detect; the so -called CT value, its complete name is Cycle Threshold Value.Copy times.The lower the CT value, the less duplicate the nucleic acid experience represents the virus can be detected by the instrument, indicating that the higher the virus concentration, the greater the infectiousness;The smaller sex.

According to the current regulations, the out -of -cabin personnel need to be isolated for 7 days in the square, there are no symptoms of new coronary pneumonia, and the nucleic acid with two or more interval between 24 hours is completed. The test results are negative or CT value is greater than 35.EssenceA large amount of evidence shows that such a rehabilitation has basically no infectious.

Southern+: Will the cabin staff recover the sun?

Chong Yutian: To talk about this problem, we must first figure out what is Fuyang.

The new version of the diagnosis and treatment plan is one of the requirements for discharge and outlets by CT value greater than or equal to 35. However, in order to avoid missing the new crown infection in the society, the CT value standard will be increased to 40.This brings a special interval, that is, the CT value is greater than or equal to 35 and less than 40, especially the recovery of discharged and out of the cabin. They may be detected in community screening for a period of time.Fuyang understood by the masses.

In fact, such people are basically not contagious.In order to reduce the misunderstanding of community nucleic acid screening, the relevant regulations of Guangzhou required discharge and departure personnel to receive on -site single -checking for the first day and 7th day of home health testing, and they did not participate in community nucleic acid screening within 3 months.check.

Southern+: Is there a rehabilitation case with CT value less than 35 after being discharged?

Chongyu Tian: Yes, and this is not uncommon, but in fact, most of the Fuyang personnel are nucleic acid positive rather than virus -positive, and some virus nucleic acid fragments remain in their body.Infected people can constitute a potential risk of communication.

This topic has received a lot of attention in the medical community.On July 26, Tang Xiaoping/Li Feng's team of Eighth Hospital Affiliated to Guangzhou Medical University and Academician Zhong Nanshan team in Guangzhou National Laboratory, united by the Guangdong Centers for Disease Control Center Li Yan/Ke Changwen team and Shenzhen Third People's Hospital Lu Hongzhou team completed together.A study published in national scientific reviews shows that it is unlikely to spread the virus after the new crown infected person, which is safe for the community.

Through the method of cell culture, the researchers tried to cultivate the new crown virus from the upper respiratory tract samples of 25 Fuyang personnel, but they all failed.Among them, a sample CT value with the highest virus load reached 25, but no live virus was found.

In an epidemiological survey in real world, the researchers found that 23 recovery personnel had had close contact with 259 people in the community, but never caused any community communication incidents.

The same strain will not be infected in the short term

Southern+: Will Fuyang affect the health of the recovery itself?

Chongyu Tian: The above studies also evaluated the health impact of Fuyang, and found that although these Fuyang personnel have virus RNA in the body, the rehabilitation trend is good.Among them, only 16 of the 289 recovery personnel had symptoms such as mild cough, throat discomfort, and tiredness, which showed that virus nucleic acid Fuyang did not cause clinical symptoms, and Fuyang personnel did not need to be hospitalized for treatment.

Southern+: Will the recovery be infected for a second time?

Chongyu Tian: Rehabilitation has resistance to the virus. In a short period of time, for the same virus strain in a short time, it will not be infected in the second time.

However, it must be noted that on the one hand, the antibody level of the new crown recovery will gradually decrease after being infected for several months; on the other hand, the new crown virus is constantly mutating, and there may be immune escape between different virus strains.That is, the antibody of a virus strain may not be effective in another virus strain.Therefore, recovery should still pay attention to personal protection.

Southern+: Why do you have to wear a mask in the square cabin?Will you cross -infection in the square cabin?

Chongyu Tian: At present, the cure of nucleic acid detection is positive infected, and the virus strains are roughly the same.As mentioned just now, in a short period of time, for the same virus strain, the infected person will not have secondary infections, so cross infections will not occur in the square cabin.

However, due to the high density of the personnel in the square, in order to prevent other infectious and infectious diseases, the infected people should also pay attention to changing the medical mask regularly in the square cabin, do a good job of personal hygiene, and try to avoid close contact.

Southern+: Is there any sequelae of new crown pneumonia?

Chongyu Tian: Sequelaes are defined in medicine.Some patients with infectious diseases, after the recovery period is over, the functions of certain organs have failed to return to normal for a long time, and they are considered sequelae.

We have observed in practice that the clinical manifestations of some patients may continue to be relatively long, such as loss of smell and smell, joint pain, memory loss, chest pain, cough, etc.It is classified as the sequelae of new crown pneumonia.

At present, our understanding of the new crown virus is not deep enough, and the observation time for the recovery is not long enough.Therefore, whether the new coronary pneumonia is sequelae and what kind of sequelae are there, there are different views in scientific, and it still needs further clinical confirmation.At present, the academic circles have not confirmed that the new coronary pneumonia has sequelae.