Listeria infection (listeriosis) can be particularly harmful for pregnant women, people aged 65 and older, and people with weakened immune systems, according to the Centers for Disease Control and Prevention (CDC).
October 30, 2025
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medical
High-risk groups for severe listeriosis outcomes
Symptoms of listeria infection can include headache, fever, changes in mental status, difficulty walking, seizures, stiff neck, muscle aches, and fatigue.
October 06, 2025
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medical
Common clinical presentations of listeriosis as described by public health guidance
An expert advisory panel makes vaccine policy recommendations to the U.S. Centers for Disease Control and Prevention (CDC).
September 07, 2025
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general
Describes the institutional role of the CDC's vaccine advisory body in U.S. vaccine policymaking.
The CDC states that when more than 95% of people in a community are vaccinated, most people are protected through community immunity (herd immunity).
January 01, 2025
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health
CDC guidance on vaccination coverage needed to achieve herd immunity for measles.
CDC data show that approximately 95.2% of U.S. kindergarteners were vaccinated against measles in the 2019â2020 school year, about 93% in the 2021â2022 school year, and about 92.7% in the 2023â2024 school year.
January 01, 2025
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health
CDC-reported measles vaccination coverage among U.S. kindergarteners across selected school years.
U.S. Centers for Disease Control and Prevention (CDC) data covering 2021â2023 found that American individuals age 1 and older obtained more than 50% of their daily calories from ultra-processed foods (examples include hamburgers, pizza, and sweetened drinks).
December 31, 2023
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statistical
National dietary intake data reported by the CDC for the 2021â2023 period.
A July 2023 Centers for Disease Control and Prevention report found that 42% of surveyed health care providers had never heard of alpha-gal syndrome.
July 01, 2023
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temporal
Health care provider awareness survey result
In 1962, the U.S. Centers for Disease Control and Prevention established guidelines for how much fluoride should be added to public drinking water.
January 01, 1962
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temporal
Historical guideline-setting by a federal public health agency regarding water fluoridation levels.
The Centers for Disease Control and Prevention (CDC) defines "individual-based decision-making" for vaccination as vaccination based on shared clinical decision-making between patients or caregivers and health care providers, including physicians, nurses, and pharmacists.
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policy_definition
Definition of an approach to vaccination decision-making used in immunization guidelines.
The U.S. Centers for Disease Control and Prevention estimates that about 1,600 people get sick from listeria infections each year in the United States and about 260 die annually.
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statistical
Annual burden estimate for listeria infections in the United States provided by the CDC.
Centers for Disease Control and Prevention (CDC) data show that about 93% of U.S. kindergarteners were vaccinated against measles during the 2021â2022 school year, 92.7% during the 2023â2024 school year, and 95.2% during the 2019â2020 school year.
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statistical
National measles vaccination coverage among kindergarteners reported by the CDC for specific school years.
The CDC's provisional estimates of fentanyl-related deaths are based on state death records received and processed by the National Center for Health Statistics (NCHS).
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methodological
Describes the data source and processing used for provisional mortality estimates.
Transmission of avian influenza viruses between humans is extremely rare and human-to-human transmission has not been documented in the United States.
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descriptive
General epidemiological observation about avian influenza transmission patterns.