FCGR2B and infection: In contrast to the activating FcγRs, the inhibitory receptor (FcγRIIB) remained highly elevated during both the acute (i.e at 5 dpi, 99.3%) and chronic phase of infection [i.e., 30 (92.6%), 60 (73.9%), and 90 (48.3%) dpi], (Fig. 3A).