Nurith Aizenman
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New results from a COVID-19 vaccine trial in South Africa suggest the vaccine that was developed by AstraZeneca may not be as effective against the variant found there.
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Not everyone gets tested. A new model estimates how many infections are missed because of this and how many people are actively shedding the virus. The results lend urgency to the vaccine race.
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New research shows how official figures understate the U.S. pandemic: On any given day the number of infected people who are actively contagious is ten times that day's tally of new reported cases.
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Six takeaways from discussions at the annual meeting of the World Health Organization's Executive Board.
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A year ago today, the WHO first learned of a cluster of pneumonia cases in Wuhan, China of "unknown" origin. Here's the impact of that fateful day, by the numbers.
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A new study suggests big sisters have a powerful impact. (Sorry, big brothers, you don't make as much of a difference.) But there are also potential downsides for the sisters.
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A new study suggests kids in poor countries benefit hugely from having older sisters — who are more likely than brothers or even mothers — to engage in stimulating play.
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It's part of an ongoing back-and-forth: Republican presidents ban U.S. funds for foreign aid groups that 'promote' abortion, Democratic presidents revoke the ban. This time things could be different.
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Steve Davis lays out the reasons for his (relatively) rosy outlook In his new book: Undercurrents: Channeling Outrage to Spark Practical Activism.
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The authors of the "Global Burden of Disease" report track the toll from every conceivable cause of death or disability. This year they also share intriguing solutions that give cause for optimism.