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<p> It was not entirely unexpected that emerging Zika virus could transmit sexually &mdash; as it has now done in the first case acquired in the U.S. &mdash; but it jolted a public health narrative that was primarily focused on mosquitoes, pregnancy, and birth defects.</p>

Preventing Sexual Transmission of Zika, Case in Dallas Prompts CDC guidelines

Risk is low but real; mosquitoes still prime threat

It was not entirely unexpected that emerging Zika virus could transmit sexually — as it has now done in the first case acquired in the U.S. — but it jolted a public health narrative that was primarily focused on mosquitoes, pregnancy, and birth defects.