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So far, the number of people infected with Corona in Korea has exceeded 14 million.

There is also a concern that I might catch Corona again, but the probability of that happening is very low.

In particular, older people who have been vaccinated have the lowest risk of re-infection.



For more details, medical correspondent Cho Dong-chan will tell you.



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What is the probability of contracting Omicron again after being infected with the Omicron mutation?



Denmark has been tracking 1.8 million people for two months during the Omicron pandemic.



Another 1,739 people were infected, 89% were unvaccinated.



When samples were taken and genetically analyzed, 73% of reinfected Omicrons were stealth Omicrons.



By age, teenagers accounted for the most at 23%, and most were under the age of 30.



The researchers found that Omicron is extremely rare in reinfection in the elderly compared to Delta.



Omicron reinfection rates were lowest among those 65 years of age and older in the UK study.



Although older people are less active and have higher vaccination rates, it is believed that the greater reason is that they are more ill and have stronger immunity than younger people.



[Lee Geun-Hwa/Professor of Microbiology at Hanyang University: Children and adolescents have lower vaccination rates than adults and are active (high reinfection), so antibody and cellular reactions occur more frequently than adults (the symptoms are mild)]



However, those over the age of 65 had a greater risk of severe reinfection.



Younger people had a 90% lower risk of severe infection at re-infection than the first infection, while those over 65 had only a 48% lower risk.



If so, how long will the infection prevention effect last?



Let's look at the hybrid immunity that got infected after being vaccinated.



As long as 20 months in the Swedish study and at least 1 year in the UK and Japanese studies.



The longer the observation, the longer it may be, so it is expressed as 'at least'.



In Korea this year, as of the 16th of last month, out of 7 million confirmed cases, the estimated number of reinfected cases of Omicron is 129.



It is more than 100 times lower than Denmark and the UK.



There is a possibility that domestic re-infection cases may be omitted, but it is analyzed that the high vaccination rate in Korea is the cause.



(Video editing: Park Chun-bae, CG: Seo Seung-hyun·Kang Kyung-rim)