Zika Virus Vs. Condoms

Millions of people have died or are now sick because religious doctrines allegedly determined the use of condoms is a sin, but allowing the spread of disease that kills and destroys lives that condoms can prevent is not. Now that the zika virus is creating so much harm to so many babies, women in certain countries are being told to hold off getting pregnant. The moral choice arises again. Are the use of condoms the sin, or is forbidding the use of condoms to prevent disease and pregnancy the real sin?