Fig. 1From: Weak anti-SARS-CoV-2 antibody response is associated with mortality in a Swedish cohort of COVID-19 patients in critical carePlasma concentrations of IgM (a), IgG (b) and IgA (c) antibodies measured on ICU day 0–3 (early) and on ICU day 10–13 (late), in patients who survived (n = 15) of COVID-19 versus those who died (n = 4) within 30 days. Each data point on the graph represents individual values, differences were considered statistically significant when P < 0.05. Change over time within groups was determined by Wilcoxon signed rank test and between groups were determined by Mann–Whitney test. Plasma concentrations of all three antibody isotypes changed over time and were significantly higher on day 10–13 for IgG and IgA in patients who survived COVID-19 than in those who diedBack to article page