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Risk depends on who you are referring to and whether they have completed all their recommended vaccinations. A healthy younger adult (<65 years old) who is up to date with all vaccinations, including the latest Covid booster dose, is much less likely to become hospitalized or die from a Covid infection compared to the beginning of the pandemic. A person who is of older age (age >65 years) with an immunocompromising condition and/or is not up to date with their vaccinations has a much higher risk of hospitalization and death.
To protect yourself and your mother, you should ensure you are both up to date with vaccinations. You should isolate and quarantine if you have a known exposure and you should wear a mask if ill.