$AIDS$ Day is observed on:

Transmission of $HIV$ infection from an infected mother to the fetus occurs through:

$A$ doctor while operating on an $HIV$ positive patient accidentally cuts himself with a scalpel. In order to confirm whether he has contracted the virus,which of the following tests should be performed?

After entering the body,which cell does $HIV$ primarily infect?

In the given flow diagram,the replication of a retrovirus in a host is shown. Observe and answer the following questions.
$(a)$ Fill in $(A)$ and $(B)$.
$(b)$ Why is the virus called a retrovirus?
$(c)$ Can the infected cell survive while viruses are being replicated and released?

What is the full form of $NACO$?