Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Proportion of ordinal HCoV antibody levels from COVID-19 patients with and without critical disease. (a) OC43 (P = 0.016) (b) HKU1 (P = 0.023) (c) NL63 (P = 0.82) (d) 229E (P = 0.30). COVID-19 patients with critical disease present low antibody levels more frequently than patients without critical disease. This difference is significant for OC43 and HKU1.
