Novavax, a Maryland biotechnology company that endured delays in developing a coronavirus vaccine, revealed results Monday showing that the world is close to having another shot that prevents illness and death, stops virus variants — and proves easy to store. Other vaccines work by instructing the body’s cells to build the spiky proteins that dot the outside of the coronavirus. The immune system learns from the exposure to recognize the real thing. But Novavax’s vaccine consists of that spike pr

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