Approximately how many people have died worldwide due to $AIDS$ since its first report?

Which of the following is a symptom of full-blown $AIDS$?

The first case of $AIDS$ in India was reported in:

What is the full form of $AIDS$?

At which stage of $HIV$ infection does one usually show symptoms of $AIDS$?

$A$ 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?