No he did not.
Please feel free to post what the Pope said. No wait, I’ll do it. From the National Catholic Register:
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Again, I’ll repeat. The Pope does not say ‘contraception’. He says avoiding pregnancy. There are legitimate ways to avoid pregnancy, such as NFP. He references an event (which itself is not proven as there are no primary sources) that Pope VI approved the use of contraceptives for nuns in a situation in which CELIBATE WOMEN would face an act of war (rape) and at a time when the understanding of how ‘the pill’ works and the composition of the pill itself were quite different.
He does not say that the ZIKA VIRUS is a case where contraception can be used. He says that the Pope Paul VI ‘case’ in which women ‘defended themselves’ from an ACT OF WAR (rape) could encompass the use of a substance which was believed simply to ‘prevent pregnancy’ in women who would never ‘choose’ the ‘marital’ relations. IOW, it was not to protect women from pregnancy PER SE, but rather to defend women from an act of aggression which COULD ‘cause’ pregnancy in some cases!
The Zika virus is not an act of war. The women who might be affected are not being attacked by rapists whose intent is to physically violate ‘any’ woman and who wish to protect themselves so far as possible from consequences of an ACT OF WAR.