(
A to
K) Viral load in upper respiratory tract of the 11 patients with COVID-19 at various time points as measured by RT–quantitative PCR (qPCR) (blue symbols). SARS-CoV-2–neutralizing antibody titers in serum/plasma for six severe (A to F; red symbols) and five mild (G to K; green symbols) COVID-19 patients at various time points as determined by PRNT50. (
L to
O) Cytokine levels (L, IL-6; M, IL-8; N, MCP-1; and O, MIP-1β) of fourfold diluted plasma/serum samples at various time points in the 11 patients with COVID-19 as analyzed via a Bio-Plex Pro Human Cytokine Panel 17-Plex assay. (