Fig. 2From: Low humoral immune response to the BNT162b2 vaccine against COVID-19 in nursing home residents undergoing hemodialysis: a case–control observational studyCorrelation of age and anti-spike protein antibody levels in a nursing home residents 3 weeks after the first dose, b healthcare workers (control group) 3 weeks after the first dose, c nursing home residents 3 weeks after the second dose, and d healthcare workers (control group) 3 weeks after the second doseBack to article page