It might be safe to say that, and it is certainly fashionable, but it is not accurate to say that.
How is it not accurate?
(P1) People living in areas with a high concentrations of HIV+ people have a higher probability of contracting a disease than those who live in areas with low concentrations of HIV+ people.
(P2) People who do not practice safe sex face a greater risk of contracting a sexually transmitted disease than those who do practice safe sex.
(P3) Condoms, when used correctly, significantly lower the chance of contracting/spreading a sexually transmitted disease during intercourse.
(P4) Catholics living in Africa live in an area with a higher concentration of HIV+ people.
(P5) Catholics are prohibited from practicing safe sex/using condoms
(C) Therefore, Catholics living in areas with a high prevalence of HIV/AIDS, who are forbidden from using condoms, are far more likely to contract HIV/AIDS