People at higher risk of severe listeria infections include people who are pregnant, newborns, adults aged 65 or older, and people with weakened immune systems.
October 06, 2025
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Risk groups for severe outcomes from listeriosis
Newborns, older adults, and people with chronic health conditions such as high blood pressure and diabetes are at higher risk of severe outcomes from chikungunya infection.
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Risk groups for more severe chikungunya disease.