【THE TIME OF ISRAEL】 ワクチン接種 3回目は重要・4回目は効果が限定的かもしれない

ワクチン接種 3回目は重要・4回目は効果が限定的かもしれない

Before age 60, 4th vaccine slightly cuts infection rates, moderately thwarts illness
https://www.timesofisrael.com/before-age-60-4th-vaccine-slightly-cuts-infection-rates-moderately-thwarts-illness/

若者や健康な人々にとって 4回目の接種は少しは効果がある
若者や健康な人々にとって 4回目の接種は少ししか効果がない
感染を少し抑制する
病気の発症に適度な抑制効果がある

Efficacy of a Fourth Dose of Covid-19 mRNA Vaccine against Omicron
the efficacy of a second booster shot

 March 16, 2022　peer-reviewed　査読済み
https://www.nejm.org/doi/full/10.1056/NEJMc2202542?query=featured_home

4th COVID Vaccine Shot: Does a Second Booster Work?

March 19, 2022 3:50 p.m. PT
https://www.cnet.com/health/medical/4th-covid-vaccine-shot-does-a-second-booster-work/

antibody levels increased but protection against infection was minimal. The study estimated only 30% protection from infection with a second booster from Pfizer, and 11% protection from a second Moderna booster.

感染抑止 the efficacy of a second booster shot
2回目のブースターショット
ファイザー Pfizer 30％
モデルナ Moderna 11％

"The potential future requirement for an additional boost -- a fourth shot for mRNA, or a third shot for Johnson & Johnson -- is being very carefully monitored in real time," White House Chief Medical Adviser Dr. Anthony Fauci

何故か4回目のワクチン接種はファイザーが少し効果が高い

the third dose is extremely important for anyone
a fourth vaccination of healthy young health care workers may have only marginal benefits.