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T1 ranges between 2 weeks and 2 months after receiving the COVID-19 booster dose. T2 represents a 6-month duration after the initial collection. These measurements were taken from participants who had received the Pfizer-BioNTech (BNT162b2), AstraZeneca, or Sputnik V vaccine. //The upper values (>200 U/ml) do not follow the same scale as the lower ones (≤ 200 U/ml).
