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WHO Says Zika Virus Spreading Explosively, 4 Million Cases Forecasted

The Zika virus is “is now spreading explosively” in the Americas, the head of the World Health Organization said Thursday, with another official estimating between 3 million to 4 million infections in the region over a 12-month period. “The level of concern is high, as is the level of uncertainty,” Dr. Margaret Chan, WHO’s director-general, …

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Millions More Need HIV Treatment, W.H.O. Says

The World Health Organization issued sweeping new guidelines on Wednesday that could put millions more people on H.I.V. drugs than are now getting them. The recommendations could go a long way toward halting the epidemic, health officials say, but would cost untold billions of dollars not yet committed. H.I.V. patients should be put on an …

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