DSCC eligible-hearing loss of 30dB or greater at any 2 of the following frequencies: 500, 1000, 2000, 4000 and 8000 Hz; or hearing loss of 35 dB or greater at any one of the frequencies 500, 1000 and 2000 Hz; involving one or both sides. Visual Impairment.
Etiologic Agent. Human immunodeficiency virus, or HIV, is the causative agent that can lead to acquired immune deficiency syndrome, or AIDS. Transmission. HIV can be found in an infected host s body fluids.
1 Helper T-cells (CD4+) are middlemen in the immune response. 2  When they get activated, they proliferate and secrete cytokines that regulate or help effector lymphocyte function. 3  They are known as one of the targets of HIV infection, and the decrease of CD4+ T-cells results in AIDS.