The first case of $AIDS$ was reported in the year .........

How is $HIV$ infection diagnosed?

The cause of $AIDS$ is ..........

World $AIDS$ Day is observed every year on:

What are the various routes by which transmission of human immunodeficiency virus takes place?

How many of the following factors are responsible for the spread of $AIDS$?
$I -$ Sexual contact with an infected person
$II -$ Wearing clothes of an infected person
$III -$ Transmission from infected mother to the foetus through the placenta
$IV -$ Shaking hands with an infected person
$V -$ Use of contaminated blood and blood products
$VI -$ Use of contaminated needles or syringes by drug addicts