On December 13, the World Wide Web news. The Tianjin Municipal Center for Disease Control and Prevention found the mutated strain Aomi Kerong in test samples imported from abroad. This is the first time Chinese mainland that an evolutionary branch of the new coronavirus has been discovered.
A mutated strain appeared in Tianjin
The Tianjin Municipal Epidemic Prevention and Control Headquarters announced that a batch of test specimens of asymptomatic covid-19 infected people imported from abroad on December 9 were suspected of having a mutated strain of Aomi Kerong. After the Tianjin Municipal Center for Disease Control and Prevention conducted sequence analysis of the respiratory specimens, they were sent to the National Center for Disease Control and Prevention for review, and finally confirmed that there was indeed a mutant branch of the new coronavirus in the sample.
The Tianjin Municipal Center for Disease Control and Prevention issued an early warning to remind the general public to pay attention to personal protection, maintain personal cleanliness and hygiene, wear a good mask, and unvaccinated citizens should pay close attention to cooperating with the vaccination of national medicine vaccines and prohibit large-scale gathering activities. At the same time, personnel in entry areas, personnel in key prevention and control areas, and personnel engaged in posts with high risk of infection must take the initiative to report to the community when returning to Tianjin, and do a good job of entry monitoring and self-isolation. Insist on not leaving The Non-Essential, reduce non-essential travel activities, and jointly deal with the mutated strain Aomi Kerong.
Mutate the strain or weaken the effectiveness of the vaccine
Recently, several research teams from the United States, Germany, South Africa, and Sweden have come from four countries.
The first study and analysis of the mutant virus Omiljung found that the latest variant virus is very likely to impair the effectiveness of the new crown vaccine, because the new crown virus has greatly improved its ability to evade the immune system after evolution. But the team of four experts still believes that people need to get a booster shot because it can still boost the immunity of the vaccinated person.
In the latest research experiments, the research team used a variety of methods to analyze Theomexon in order to study how the mutant strain escaped the vaccine antibody. Experiments were conducted using mutant particles isolated from specimens infected with Omilon with a risk of infection, or using genetically modified versions of other viruses, and the final experimental results showed that Omilon did have a weakening effect on vaccine antibodies compared with other new coronavirus strains.
The South African team found in the experiment that after the vaccinator was vaccinated and produced antibodies, the risk of contracting Omeikron was still extremely high compared to the previous new crown variant, and the average resistance of serum antibodies was also reduced by nearly four times. Subsequently, the German research team also came up with similar results after research. But in the experimental reports of other research teams, the antibody decline was not so large. Other than that. The Pfizer vaccine research team found that if people were given a third dose of the booster vaccine, The ability of Omilon to evade serum antibodies was less prominent, basically like other strains.
Strengthen epidemic prevention and control
In order to prevent the large-scale spread of the Omiljun strain, countries around the world have raised the level of epidemic prevention and control and strengthened their response to the spread of the epidemic. Actively promote the vaccination of the third dose of vaccine, European and American countries have also begun to implement the "mask order", and countries have also raised the level of epidemic prevention and control and adopted more stringent epidemic prevention measures.
China has also taken into account the risk of importing mutated strains from abroad and stepped up entry control measures, especially in the winter when influenza is frequent, to prevent the superposition of viruses and epidemics.