The $ELISA$ test is used for the diagnosis of

The presence of $HIV$ can be detected by these methods:
$(i)$ $ELISA$
$(ii)$ $WB$ $Test$ (Western Blot)
$(iii)$ $VB$ $Test$
$(iv)$ $ALISA$

Which virus directly attacks macrophages?

In which of the following stages of $HIV$ infection do the symptoms of $AIDS$ appear?

After being released into the blood,$HIV$ attacks which cells?

Consider the following statements about $AIDS$.
$I.$ $AIDS$ patient become easily infected by bacteria,viruses and even parasites.
$II.$ The person is unable to protect himself against any infection.
$III.$ National $AIDS$ Control Organisation $(NACO)$ and non-governmental organizations are trying their best to educate people about $AIDS$.
Which of the statements given above are correct?