Al Jazeera Net - Beijing

Specialists addressed several hypotheses and analyzes regarding the return of the emerging SARS Cove 2 virus that causes Covid-19 disease to the bodies of those recovering from the disease, trying to answer questions that created concern among people looking for a ray of hope about curbing the epidemic.

Reports from China, the country of origin of the epidemic, of the disease returning to 14% of the recovered in the southern province of Guangzhou, the People's Daily quoted a deputy director of the provincial center for disease control and prevention as raising fear about the ability of the virus to return to activity again within The body of the injured person after recovery, showing the same symptoms, and the possibility of transmitting the infection to healthy people.

The first hypothesis
Li Xuezhong, a member of the Group of Experts for Medical Treatment of Pneumonia in Sichuan Province, believes that the most likely reason for the explanation of the return of infected patients is the method of sample detection, saying in a press statement that "according to the diagnosis and treatment of new coronary pneumonia (beta 5) patients underwent Those who were previously discharged from the hospital for smears from the nasopharynx in order to perform the test, as these tests are appropriate for the onset of the disease, but the progression of the disease at a later time needs to detect the virus in the lower respiratory tract through the sample.

He added that "the plan for the diagnosis and treatment of pneumonia for new coronaviruses" (beta 6) reviewed the exit criteria for the recovered, as it adopted "the detection of samples of fluid in the alveoli as exit criteria, which makes the result more accurate."

The second hypothesis
A scientific paper prepared by the Arab Center for Stem Cells in Jordan, and reviewed by the Jordanian Society of Allergy and Immunology Doctors, concluded that the affected person's immunity is weak, or that he suffers from an immunodeficiency that his immune system cannot form immune memory cells, which causes the body to respond to the same virus in Every time like a new virus.

In another explanation mentioned in the scientific paper, the person who is infected with the new Corona virus gets immunity for a specific period against the "same" virus, but the appearance of symptoms of the disease again indicates that the patient was infected with a strain the first time, then infected with another strain of the same virus the next time .

Al Jazeera Net reviewed a scientific review issued by the Chinese Academy of Sciences regarding the origin and continuous development of the new corona virus, which concluded that 149 mutations occurred in the strains of the virus, and 101 of them can be classified into two subtypes, "S" and "L", and the review found that the type The "L" subtype is more common, affecting about 70% of patients.

6144107683001 d633fe9c-4b05-4567-93aa-44629b76c140 ce352a65-ab1b-4fc0-bc2c-c6404638c1e4
video

The third hypothesis
Thoracic surgeon doctor Ali Al-Waari believes that the return of the virus to some recoverers is due to the presence of small quantities of the virus inside the body, but the DNA detector examination was unable to detect it because it needs a minimum number of viruses in the sample, which gives a negative result (recovered). If the required number of viruses is not available in the sample.

Al-Waari added in an interview with Al-Jazeera Net that "the positive result of examining the DNA of recovered people who do not suffer from symptoms of the disease cannot determine the focus and activity of the virus in the body, which means that checking the DNA detector cannot determine whether the virus is contagious or not." That the Chinese health authorities began applying the quarantine for 28 days to those recovering from the virus before being allowed to return to their homes.

Is the return of the virus contagious?
A health committee in north China's Tianjin announced at the end of February that a 6-year-old child had transmitted the infection to his mother after a negative result was found for the DNA detector and was discharged from the hospital, while the Guangzhou Provincial Center for Disease Control and Prevention said 13 patients had returned to the virus They mixed with about 100 people and the infection did not spread to anyone.

6144449200001 168302b2-f47e-45e4-a202-10f2d5724992 450c7a1f-b010-43dd-b09f-a2efc07a19a6
video

The epidemiologist, Abd al-Salam al-Khayyat, says that the possibility of a mistake in the child's outcome is contained, "and that his body was not completely clean of the virus, which was re-activated and was able to pass on to other people."

Al-Khayyat added to Al-Jazeera Net that the presence of a small number of viruses and their fight by the antibodies produced by the patient's body prevent the virus from being able to infect other people.

But he noted that scant knowledge about the virus’s behavior and ability to evolve opens the door to unexpected assumptions.

6143646901001 5a4b06e8-9690-4070-ac20-2ea79e39fc7e c16f55c5-78f2-420a-9191-a723e9437076
video

China in the face of reverse infection
Chinese Health Commission spokesman Mei Feng said at a press conference Sunday that the possibility of an outbreak of the new coronavirus on the Chinese mainland again is still quite high.

"The epidemic cannot spread again in China while keeping preventive measures at this strong level, but this hypothesis relies on continuing prevention, effective control and remaining alert," said Zhong Nanshan, head of the Chinese Experts Group to Fight the Epidemic. .

Chung predicted that the initial success in containing the epidemic globally would be achieved next April if strict measures were implemented around the world.