Select the correct statements.

I. The word AIDS stands for Acquired Immuno Deficiency Syndrome. This means deficiency of immunesystem, acquired during the lifetime of an individual.

II. AIDS was first reported in 1981 and the word ‘syndrome’ in this, means a group of symptoms.

III. There is always a time-lag between the infection and appearance of AIDS symptoms, i.e. vary from a ew months to manyyears (usually 5-10 years).

IV. During HIV infection, the macrophages cells of body continues produce virus and in this way acts like a HIV factory.