“Immune avoidance effect, not an increase in omicron infectivity”
[아시아경제 나예은 기자] A study result showed that the COVID-19 omicron mutant virus has stronger immune evasion than the delta mutation. In other words, Omicron is relatively likely to invalidate the vaccine.
According to Fox News on the 3rd (local time), the University of Copenhagen in Denmark and the National Serum Research Institute (SSI) under the Ministry of Health conducted a survey on about 12,000 households last month and found that the omicron mutation has stronger immune avoidance than the delta mutation. .
Viruses are usually contagious depending on how long they stay in the air, their ability to attach to cells, and their ability to evade the body’s immune system. The study found that the omicron mutation was 2.7 to 3.7 times more contagious than the delta mutation among vaccinated Danes.
In unvaccinated subjects, Omicron had a 1.17 times higher secondary infection rate than Delta. In the case of vaccination, Omicron caused 2.61 times more secondary infection than delta, and in booster shot (boost shot), Omicron was 3.66 times more likely than delta.
“These study results show that the spread of Omicron is due to a higher immunity to evasion rather than an increase in the basic infectivity of the virus,” the researchers explained. This study has not yet been peer-reviewed.
Earlier, the Imperial College London Corona 19 Response Team also announced that Omicron’s immune evasion function was greater. In the study, Omicron was 5.41 times more likely to reinfect an immune person than Delta.
Meanwhile, in Denmark, 78% of the population completed the second vaccination, and 48% of them received the booster shot. The situation is similar to that of Korea, where 83% of those who have completed the inoculation and 36% of those who received booster shots are inoculated.
Reporter Na Ye-eun [email protected]
Source: 아시아경제신문 실시간 속보 by www.asiae.co.kr.
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