Retroviridae
The problem(s) associated with development of a vaccine against HIV is/are

virus can spread from cell to cell by fusion to produce syncytia
rapid mutation of HIV
all of these
antibody alone may be insufficient

ANSWER DOWNLOAD EXAMIANS APP

Retroviridae
A viral load test detects the

provirus of HIV in infected cells
amount of bacteriophage being produced by E. coli cells
total amount of virus in the infected host
number of viruses being released by each infected cell

ANSWER DOWNLOAD EXAMIANS APP