What does the Catholic Church say about using condoms to fight AIDS?
Apart from the fact that condoms provide no absolutely safe protection against contagion, the Church rejects their use as a one-sided, mechanical method of fighting AIDS epidemics and advocates above all a new culture of human relationships and a change in social consciousness. Only practicing fidelity and refraining from casual sexual contacts can provide lasting protection from AIDS and teach a holistic approach to love. Respect for the equal dignity of women and men, concern about the health of the family, responsibility in dealing with one's urges and desires, and also refraining (at appropriate times) from sexual union are all part of it. In the countries of Africa where societal campaigns have promoted such behavior, the rates of infection have decreased significantly. Besides that the Catholic Church does all she can to help people who are afflicted with AIDS.
(From the Catholic Youth Catechism, question 414)