Fig. 1: COV-POPART study designs.
From: A French cohort for assessing COVID-19 vaccine responses in specific populations

a, Study design for a two-dose vaccine regimen. b, Study design for a one-dose vaccine regimen.
From: A French cohort for assessing COVID-19 vaccine responses in specific populations
a, Study design for a two-dose vaccine regimen. b, Study design for a one-dose vaccine regimen.