IFNG and disease arising from reactivation of latent virus: Recent studies on humans suggest thatIFNG can be associated with neurological symptoms inTbr HAT (Katoet al., 2016) but it is not known if this is also true ofTbg HAT.IFNG is involved in parasite control in mice (Hertzet al., 1998) and recently, its production was found to be elevated above background in the plasma of individuals with latent infections after stimulation withTbg lysates but not in controls or cases of active HAT (Ilboudoet al., 2016).