Table 2.

Baseline COVID-19 severity of the cohort of patients with positive anti-S-SARS-CoV-2 immunoglobulins and the cohort of patients with negative anti-S-SARS-CoV-2.

COVID Severity †
	Anti-SARS-CoV-2 Ig Positive, n/n-Total (%)	Anti-SARS-CoV-2 Ig Negative, n/n-Total (%)
Moderate illness	52/330 (15.8%)	32/224 (14.3%)
Severe illness	268/330 (81.2%)	174/224 (77.7%)
Critical illness	10/330 (3%)	18/224 (8%)
	0.030

^† COVID-19 severity defined according to the National Institute of Health guidelines [15]; p < 0.05 regarded as statistically significant.