In Africa today, the majority of infected people acquire HIV by the time they are in their 20s or 30s and, on average, die within ten years.
According to the context, HIV means Homeward Interior Vectors.
From the context, we are not told what HIV means, so any definition from the context is definitely incorrect.
( z1 say :ARG0 ( z2 context ) :ARG1 ( z3 mean :ARG1 ( z4 disease :name ( z5 name :op "HIV" ) ) :ARG2 ( z6 vortex :mod ( z7 interior ) :mod ( z8 homeward ) ) ) )