The causative organism of AIDS spreads by
Sharing infected needles and syringes
Transfusion of infected blood
Unsafe sexual relationships
All of these
As discussed in AIDS -
Transmission of AIDS -
Transmission of HIV- infection generally occurs by
- wherein
(a) sexual contact with an infected person
(b) by transfusion of contaminated blood and blood products,
(c) by sharing infected needles as in the case of intravenous drug abusers and
(d) from infected mother to her child through placenta
Hence, the correct option is (d).