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

Explanation

AIDS is transmitted only by a contact of infected cells containing blood of a patient with the blood of a healthy person as in (i) unprotected (without condom) sexual intercourse with the infected partner if there is tissue injury to permit blood contact.
(ii) Use of contaminated needles are syringes to inject drugs or vaccines.
(iii) Use of contaminated razors for sharing.
(iv) Use of contaminated needles for boring pinnae.
(v) Transfusion of infected blood or blood products.
(vi) Organ transplant.
(vii) Artificial insemination.
(viii) Parturition from mother to body due to rupturing of blood vessels.