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Most people know their chronological age. That’s the easy one. You’re 40 because you were born 40 years ago. But that number doesn’t say much about your actual health. Or how fast you’re aging. Or how long you’re likely to stay healthy. That’s where biological age...

The Food and Drug Administration on Thursday expanded access to the updated COVID-19 booster shot to children as young as 6 months old. “More children now have the opportunity to update their protection against COVID-19 with a bivalent COVID-19 vaccine, and we...

BEIJING (AP) — Facing a surge in COVID-19 cases, China is setting up more intensive care facilities and trying to strengthen hospitals as Beijing rolls back anti-virus controls that confined millions of people to their homes, crushed economic growth...