An outbreak of yellow fever in rural Brazil is raising concerns that the disease could spread across borders to the US, like Zika, say two health experts writing in an essay published in the New England Journal of Medicine.

An outbreak of yellow fever in rural Brazil is raising concerns that the disease could spread across borders to the US, like Zika, say two health experts writing in an essay published in the New England Journal of Medicine.

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US Officials Keep Watchful Eye On Yellow Fever Outbreak in Brazil

An outbreak of yellow fever in rural Brazil is raising concerns that the disease could spread across borders to the US, like Zika, say two health experts writing in an essay published in the New England Journal of Medicine.