Which of the following is/are the methods of prevention from HIV infection ? 1. Use of condoms. 2. Use of intra-uterine devices like Copper-T. 3. Staying away from HIV infected person. 4. Using a face mask when in company of HIV infected person. Select the correct answer using the code given below.:

HIV is primarily transmitted through the exchange of specific body fluids, including blood, semen, vaginal secretions, and breast milk [2]. The use of condoms is a highly effective method for preventing the sexual transmission of HIV by acting as a physical barrier [1][t1]. In contrast, intra-uterine devices like Copper-T are contraceptive methods designed to prevent pregnancy and do not provide protection against HIV or other sexually transmitted infections [c5][t1]. Furthermore, HIV is not transmitted through casual contact such as handshakes, hugs, or sharing company; therefore, staying away from infected persons or wearing face masks is unnecessary and medically unfounded for HIV prevention [t2]. HIV is not an airborne virus, so masks offer no protection against its transmission [t2]. Consequently, only the first statement is a valid prevention method.

Sources

1. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 8: Natural Hazards and Disaster Management > AIDs/HIVs > p. 81
2. [1] Science , class X (NCERT 2025 ed.) > Chapter 7: How do Organisms Reproduce? > 7.3.3 (d) Reproductive Health > p. 125