<Anchor> With the



rapid spread of the delta mutant virus, vaccination has become a necessity. There is also an argument for shortening the interval between the 1st and 2nd doses of the vaccine, but recent research shows that it is more urgent to vaccinate people who have never been vaccinated than to rush the 2nd dose.



Reporter Nam Joo-hyun reports.



<Reporter> When a



single dose of AstraZenecana Pfizer vaccine is administered, the effectiveness of preventing infection with the delta mutant virus is as low as 31%.



It rises to 80% two weeks after the second dose.



This is where the argument for a second dose should be rushed to combat the delta mutation.



However, the effect of preventing hospitalization due to worsening of the disease was quite high with only the first inoculation, 75% after the first inoculation and 94% after the second inoculation.



Even if you are infected with the delta mutation with only the first dose, you can significantly prevent severe exacerbations, avoiding an increase in deaths or a medical collapse.



[Yigeunhwa / Hanyang University Medical Microbiology classroom teaching: mutation when a virus would have emerged, wo I guess you can be important to increase the primary coverage rather than reducing the vaccination intervals in order to prevent the severity dwaeseo infection]



are 75 years old or more are Pfizer vaccine AstraZeneca is given every 11 to 12 weeks for 60-74 year olds every 3 weeks.



The health authorities did not consider shortening the period because the vaccine effect would decrease if the vaccination interval was narrowed.



Until mid-July, the supply of AstraZeneca is not smooth, so it is difficult to rush the second vaccination.



[Jung Eun-kyung / Director of the Korea Centers for Disease Control and Prevention (Yesterday): (AZ vaccine) supply will resume from mid-July and the supply of the vaccine will be progressed to some extent, so the second vaccination will probably be intensively performed for about two weeks in August… .]



Rather than narrowing the vaccination interval, we need to hurry so that the 2.22 million people over the age of 60 who have never been vaccinated can get vaccinated quickly.



(Video coverage: Yoo Dong-hyeok, Kim Min-cheol, Video editing: Kim Ho-jin)



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