Xinhua News Agency, Beijing, June 22.
Increased infectivity
Increased infectivity This strain was first discovered in India in October 2020 and was initially called a "double mutant" virus by the media
Shahid Jamil, the deanof the Trivedi School of Biological Sciences at Ashoka University in India and a virologist, said in an interview with the Shillong Times of India that this mutant strain called "double mutation" is not accurate enough.
Dean The combined effect of these mutations enables the virus to partially avoid some neutralizing antibodies and increase infectivity
Spread widely
Spread widely Maria Van Kelkhoff, the technical leader of the WHO health emergency project, said that the alpha (α) mutant strain first discovered in the UK has spread rapidly around the world, and the delta strain is more likely to spread than the alpha strain.
At present, 92 countries and regions have detected the transmission of Delta strains, of which 80 countries and regions have found B.
Is the pathogenicity of the delta strain enhanced? At present, the scientific community does not have a unified view
The vaccine is still effective
The vaccine is still effective A recent study published in The Lancet showed that the titers of neutralizing antibodies against the Delta strain were reduced after the human body was vaccinated with the new crown vaccine
The Public Health Agency of England issued a report in May that researchers analyzed the data between April 5 and May 16 and found that the second dose of the new crown vaccine jointly developed by Pfizer Pharmaceuticals Co.
Van Kelkhoff warned that although the vaccine is still effective against the current virus, there may still be a series of mutations in the virus in the future, which will cause the vaccine to actually lose its effectiveness.
Vinita Barr, a visiting professor and immunologist at the Indian Institute of Science and Education, emphasized that no matter what kind of new coronavirus is targeted, "vaccination always puts you in a good position to fight infection
Focus on the new crown pneumonia epidemic
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