Do you need a spring COVID-19 vaccine? Research backs extra round for high-risk groups

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.

"Even when the risk of infection starts to increase, the vaccines still do a really good job at decreasing risk of severe disease," said McMaster University researcher and immunologist Matthew Miller.
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That means:
* Adults aged 65 and up.
* Adult residents of long-term care homes and other congregate living settings for seniors.
* Anyone six months of age or older who is moderately to severely immunocompromised.

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