Singapore announced its first Zika infection in May, with the virus imported by a 48-year-old man who had traveled to Brazil.

新加坡在五月份通报了该国首例寨卡病毒感染病例，是一名48岁的男子，曾去过巴西。

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The CDC says that Brazil reported its first case of Zika virus in May 2015.

美国疾病控制预防中心表示，巴西于2015年5月报告了首起寨卡病毒案例。

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The Zika virus, which has been linked to severe birth defects in thousands of babies in Brazil, is spreading rapidly in the Americas.

寨卡病毒正在美国迅速蔓延，它与巴西成千上万先天缺陷的婴儿相关。

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More than half of the cases have been caused by the DENV-4 strain of the virus, which was first detected in Brazil in 2011.

BBC: Brazil dengue cases almost triple as new strain spreads