Patients with COVID-19 had a persistently low B cells and
minimal increase in NK cell population
We furtherĀ assessed B cells, NK cells, and NKT cells in peripheral blood
to better understand lymphocyte attrition. When compared to
hospitalization, there was a substantial decline in B cells from one
month (P=0.043) to 6-7 months (P=0.0034) (Fig 4A). The cytotoxic and
regulatory fractions of NK cells increased slightly but not
significantly with time compared to enrolmentĀ (Fig 4B & 4C). Despite
this, no significant changes in NKT cells were observed over time (Fig
4D).