Post-third-dose antibody titer distribution of 1356 individuals compared to COVID-19 survivors (IMAGE)
Caption
Post-booster antibody titers of the elderly individuals inhabiting long-term care facilities and day care centers were measured and compared with that of youngsters as well as COVID-19 survivors in the same cluster. It was found that the concentration of antibodies in the elderly reduced with age, and some were non-responders. The lowest values in each younger age group were 317.9 U/mL in <30 years; 392.3 U/mL, 30–39 years; 320.7 U/mL, 40–49 years; 258.5 U/mL, 50–59 years; and, 284.6 U/mL, 60–69 years.
Credit
Masanori Nakayama, Okayama University, Japan
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