The finding was similar to results of previous studies [17], [18], [19] and [20], which stated that knowledge and misinformation on HIV causes negative attitude and discriminative behavior by health workers towards people with HIV. Effect of knowledge and attitude altogether was 5% towards reduction of discriminative behaviors meanwhile contribution of knowledge towards attitude was 39% [21]. Knowledge on HIV is related to the attitude towards people with HIV [22]. The right knowledge on HIV and AIDS would correlate positively with emphatic attitude towards people with HIV and to preventive behavior towards exposure during practice. Midwives who understand modes of HIV transmission have low stigma towards people with HIV [23], [24] and [25].