Created at	Source	Raw Value	Validated value
Feb. 11, 2021, 12:45 a.m.	oms	Immunogenicity of COVID-19 vaccines boosted at day 28 in seronegative participants measured using serum level of anti-spike immunoglobulins using ELISA at 56 days	Immunogenicity of COVID-19 vaccines boosted at day 28 in seronegative participants measured using serum level of anti-spike immunoglobulins using ELISA at 56 days