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Recent studies suggest staying up-to-date on COVID shots helps protect high-risk groups from severe illness

New guidelines suggest certain high-risk groups could benefit from having another dose of a COVID-19 vaccine this spring — and more frequent shots in general — while the broader population could be entering once-a-year territory, much like an annual flu shot.

Medical experts told CBC News that falling behind on the latest shots can come with health risks, particularly for individuals who are older or immunocompromised.

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Scientists study evolution of COVID in an effort to head off a resurgence

Rat droppings from New York City. Poop from dog parks in Wisconsin. Human waste from a Missouri hospital. These are some of the materials that are readying us for the next chapter of the coronavirus saga.

More than four years into the pandemic, the virus has loosened its hold on most people’s bodies and minds. But a new variant better able to dodge our immune defenses may yet appear, derailing a hard-won return to normalcy.

Scientists around the country are watching for the first signs.

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