Changed to Pfizer and 50s 'anxiety' about adjusting the vaccination interval
The new coronavirus infection (COVID-19) vaccination for the 55-59-year-old (born 1962-1966) age group in the metropolitan area has been changed to Pfizer, and the inoculation interval has been adjusted from three weeks to four weeks, increasing anxiety.
Initially, the government planned to vaccinate Moderna vaccines for all ages, but due to disruptions in the supply schedule for Moderna vaccines, the government decided to replace them with Pfizer vaccines.
Due to the instability of supply and demand for vaccines, uncertainty about which vaccine I will receive has also increased.
Pfizer vaccine that replaced Moderna vaccine, there is no problem with the product
Experts say that there is no need to worry about product changes as the Pfizer vaccine is a proven vaccine.
Ki-seok Ki-seok, a professor of respiratory medicine at Hallym University Sacred Heart Hospital (former head of the Centers for Disease Control and Prevention) said, "There is no need to feel particularly anxious about the change from Moderna to Pfizer." "People may feel confused about the sudden change in the vaccine at the last minute, but Pfizer's vaccine product itself is a proven vaccine," he said.
Breakthrough infections reported by some Pfizer vaccine recipients were also of no concern.
Lee Jae-gap, a professor of infectious diseases at Hallym University Gangnam Sacred Heart Hospital, said, "It is a breakthrough infection, so the vaccine is not 100% effective, but it comes naturally. explained.
Meanwhile, as of the 19th of last month, the estimated number of domestic breakthrough cases of Pfizer vaccine recorded 145. On a per 100,000 basis, the number is 4.4.
Pfizer inoculation interval 3 weeks → 4 weeks… "Scientific evidence should be well explained"
Those aged 55 to 59 who receive the first dose of Pfizer vaccine during this period will receive the second dose of the same Pfizer vaccine 4 weeks later. Currently, the interval between the first and second doses of the Pfizer vaccine is three weeks. However, considering that the Moderna vaccine is four weeks, the government temporarily extended it by one week until August.
Experts predicted that extending the vaccination period by one week would not cause any medical problems. However, some pointed out that changing the vaccination schedule for administrative convenience should be avoided.
Professor Lee Jae-gap said, "Even if you look at clinical trial studies, you can give permission for 3 to 6 weeks." It is difficult to meet the 3-week vaccination interval, so there are many countries that vaccinate at 4-week intervals. 6 weeks, the UK explained that the vaccination is every 8 weeks.
Eom Joong-sik, a professor of infectious diseases at Gachon University Gil Hospital, predicted that there would be no problem with extending the vaccination interval by one week.
However, Professor Ki-seok Ki-seok said, "Rather than adjusting the vaccination interval for administrative convenience, we should give a scientific explanation to the public that vaccination is performed at intervals of 4 weeks rather than at intervals of 3 weeks. However, when the period with the highest effect was changed to 4 weeks, the public should have a proper explanation,” he pointed out.
People should be reassured about the supply and demand of vaccines
However, there were voices of concern as this situation was caused by a lack of supply of vaccines. A 57-year-old man living in Gwangjin-gu, Seoul, who recently made a reservation for a vaccination against COVID-19, said, "I was told that I would receive a herd immunity in the fall, but I'm worried that problems keep coming up as I try to get the vaccine.
Park Ji-young, head of the vaccine introduction support team at the Central Accident Response Headquarters, said on the 26th, "Moderna has recently notified that there is an issue related to production."
The related details were not disclosed in detail, but it is estimated that it will be difficult to supply sufficient quantities to Korea right away. Therefore, it seems necessary for the government to actively inform the public about the status of vaccine supply and demand.
Jeong Jae-hoon, a professor of preventive medicine at Gachon University College of Medicine, said, "The factor that worries (the people) seems to be the part about whether the vaccine can be delivered on time." "This is a measure to reassure the public about the vaccine supply schedule and supply and demand situation." Without it, these concerns may continue in the future.”