(Washington / Geneva General Electric) A large -scale study in the United States shows that the crown disease strain Omikon is essentially in nature, like other previous variable strainsOmikon is more contagious, but does not cause different claims.
In the past two years, different variety of strains of crown disease have been raging around the world, and have become the main transmission strains at different times.Four scientists from the University of MIT, the University of Minerva, and Harvard Medical College analyzed the records of the patients who were infected with crown diseases during this period. "We found that the risk of hospitalization and death in different periods was almostThe same. "
They pointed out that the study of Omikon's do not cause severe illnesses was conducted in different places, including South Africa, Scotland, England and Canada.
However, they also admit that there may be some limitations in their own research, including the number of patients who may underestimate the number of patients who vaccinated vaccines in recent waves of epidemic.They also only calculated the nucleic acid detection (PCR) positive patients, and did not include the patients who were quickly detected at home, and the total diagnosis may be underestimated.
Omikon discovered in South Africa last November last November. After that, it was quickly spread to all parts of the world. Now it is the main spread of poison strains. Almost all the new confirmed cases are infected with Omikon.
The World Health Organization pointed out on Wednesday that Omikon's two new sub -strains BA.4 and BA.5 are the causes of the recent surge in South Africa's confirmed cases.
WHO pointed out in its latest epidemiological report that these sub -type strains have "several mutations, which may affect their characteristics."
Tan Desai: Detection and gene sequencing are still absolutely important
The Director of the WHO Tan Desai said that it is too early to determine whether these new sub -strains are more likely to cause severe illnesses than other Omikon subtypes.
But he said: "Preliminary data shows that vaccination can still prevent severe illnesses and deaths."
Tan Desai also emphasized that the results of South Africa's surveys showed that "detection and gene sequencing are still absolutely important."He said: "South Africa is able to determine the two subtypes of BA.4 and BA.5 because they are still undergoing important gene sequencing that many other countries have stopped.Mutations, we don’t know what new variety of strains will appear next. "
At present, the mutation of coronal virus mainly occurs in the spiny protein area, and this is not a good thing for vaccine and drug research and development, because the speed of vaccine updates may be difficult to catch up with the speed of virus mutation.Regarding whether the future trend of coronary virus mutation will definitely "continue to weaken", the British Empire Institute of Technology Barkley has a negative view.
She believes that in addition to common mutations, coronal virus will also evolve rapidly through reorganization.If one Omikon mutant strain is reorganized with another crown disease, it may produce poison strains that can escape the immune barrier and cause more severe symptoms.
