In the primary infection stage of HIV, the virus affects which cells in the bloodstream?
A) CD4 B) Red blood cells C) Memory B D) Epithelial
Question 2
Which means of HIV transmission occurred in some people primarily before 1985, at which time measures were taken to prevent it?
A) Infected mothers passing the virus through the placenta to their unborn babies
B) Blood transfusion
C) Sexual intercourse
D) Sharing of contaminated needles