Anti-polio gains threatened by returning migrants, 200,000 unvaccinated children in Afghanistan

ISLAMABAD — The World Health Organization said Monday that the recent return of about 600,000 undocumented migrants from Pakistan to Afghanistan and an estimated 200,000 unvaccinated children in southern Afghan regions are a threat to regional gains against polio.    In its latest assessment of the disease’s international spread, WHO said that …

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How to View a Solar Eclipse Safely

DALLAS — Millions of people along a narrow band in North America will look up when the sky darkens during a total solar eclipse on April 8. When they do, safety is key. Staring directly at the sun during a solar eclipse or at any other time can lead to permanent …

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