PMC9205736_01
Peripheral blood smear reveals morulae (arrow) in the cytoplasm of a white blood cell.
CRIT2022-3062836.001.jpg
PMC9205736_01_CRIT2022-3062836.001.jpg
fig1
Peripheral blood smear was consistent with ehrlichiosis (Figure 1), despite Ehrlichia IgM/IgG being negative upon initial infectious workup, likely a false negative result secondary to immunosuppression.