$A$ doctor,while operating on an $HIV$ patient,accidentally cut himself with a scalpel. He comes to you,suspecting that he may have contracted the virus. Which test will you advise him to perform to rule out or confirm his suspicion?

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?

Which of the following diseases is not congenital?

Give the full form of $\rm {ELISA}$. Which disease can be detected using it? Discuss the principle underlying the test.

Which of the following symptoms is $NOT$ observed in $ARC$ ($AIDS$-Related Complex)?

Which cells are primarily affected by $HIV$?