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Once someone has been infected with Zika, it’s very likely they’ll be protected from future infections. There is no evidence that past Zika infection poses an increased risk of birth defects in future pregnancies.
Zika can be spread by men to their sex partners. People whose male sex partners have traveled to or live in an area with Zika can prevent Zika by using condoms condoms correctly every time they have sex or by not having sex.