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Previously, the previous cycle of nCoV infection was 5-7 days, now related to the translation phrase Tan Son Nhat, the cycle was shortened to just 3-4 days, according to Deputy Minister of Health Nguyen Truong Son.
Visiting the Cu Chi field hospital on the morning of February 11, Vice Minister Son said that it is currently not possible to explain why the nCoV infection cycle is shortened, as well as why the abnormality occurs, which is F2 positive. while F1 is negative. tell. To find the answer, we must wait for the sequence of the virus gene.
The Pasteur Institute is sequencing virus genes in patients in the Tan Son Nhat epidemic group, results expected on December 2, according to Deputy Minister Son. At that time, nCoV in this translation group compared to strains in Hai Duong, South Africa, England … was known to be coincident or mutated. Depending on the new virus strain, evaluate the possibility of tracking F0 as plus or minus, as well as the abnormalities mentioned above.
Vice Minister of Health, Nguyen Truong Son. Picture: Letter Anh.
Deputy Minister Son said that the epidemic cluster with an infectious chain between loading and unloading workers at Tan Son Nhat airport has basically been zoned and controlled. However, the group of 25 infections in the community “cannot say anything.” Recently, the city has blocked more new locations related to the pool of 25 cases, indicating that the epidemic will be very complicated in the near future.
Currently there are two explanations of “unexpected situation” when F1 is positive but F1 is negative, that F1 was infected, it spread to F2, when F1 was found positive, F1 was already cured. Or is F1 the source of transmission for “patient 1979” and F2. Vice Minister Son proposed a third hypothesis, much more worrying. That is, F2 is not infected by F1 but by a pathogen hidden in the community. The pathogen that escapes from the previous outbreaks does not have characteristic Covid-19 symptoms, so it has not been detected.
He stressed that it is the responsibility of scientists to find the most suitable hypotheses and explain them.
“And now, we still have to wait for the results of the genetic sequencing. Parallel to the waiting, to perform the screening, to take samples in the general community, the F0 screening in HCMC is no longer important,” said Deputy Minister Son.
During the last six days, the city has registered 33 cases related to the epidemic group at the Tan Son Nhat airport. In which, 8 patients work in the same group of loading and unloading personnel, supervising goods in the aircraft parking lot, 25 infected cases are relatives, neighbors … of them.
These are the cases discovered by taking samples to monitor all the employees working at the airport from January 30 to the present. The city was in trouble because the source of the infection and the start of the outbreak had not been determined. The Ministry of Health has established a special permanent unit, led by Vice Minister Son, to assist Ho Chi Minh City to suppress the epidemic. Yesterday, the priority of the Ministry of Health transferred 30,000 rapid antigen tests to the city, which serve all Tan Son Nhat airport personnel before going to work.
Letter Anh
