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KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
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On August 5, 2026 the U.S. Food and Drug Administration approved the first-ever mRNA flu vaccine for adults 50 and older, following a trial of roughly 40,000 people. KFF polling in April 2025 found that most adults ages 50 and older were uncertain whether mRNA vaccines are safe.
Fact sheet examining actions taken by the Trump administration and their impact on CEPI.
Fact sheet examining actions taken by the Trump administration and their impact on Gavi.
Most adults (56%) say they have “little” to “no confidence” in federal health agencies like the Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) to make recommendations about childhood vaccine schedules.
KFF’s latest Tracking Poll on Health Information and Trust shows that larger shares of the public express uncertainty over common vaccine myths than definitive belief. The latest analysis shows which adults are consistent myth believers, consistent myth deniers, and those who fall in the “mixed middle.”
In a new column that analyzes recent KFF polling, Founding President and CEO Dr. Drew Altman concludes that only a sliver of the public hold definitive anti-science, anti-vaccine views, and are greatly outnumbered by the people who believe established science, with even more Americans stuck in a “muddled middle.” He writes, “when you see reports of social media engagement spiking about a health myth, don’t overreact. It’s more likely than not that it's a relatively…
People who don’t have a trusted health care provider are more likely than people with one to believe or lean toward believing several common myths about vaccines, a new KFF Tracking Poll on Health Information and Trust reveals. Similarly, people who use social media or artificial intelligence (AI) chatbots at least weekly for health information are more likely than those who don’t to endorse these false vaccine claims. One example: Among adults who say they…
This poll looks at exposure to and belief in several vaccine myths and finds that people without a trusted health care provider, and those who regularly use social media or AI for health information, are generally more likely than others to belief the false claims. It also analyzes belief across vaccine myths, showing the share of the public that are consistent myth believers, consistent myth deniers, and those who land in the "mixed middle."
Two recent federal actions, including a memo about alleged COVID-19 vaccine deaths and settlements creating a “detransition clinic,” show how official actions can present uncertain or uncommon outcomes as representative and lend credibility to narratives that go beyond what evidence supports.
This brief summarizes the history, rationale, and policy issues related to the federal government's key vaccine injury compensation programs, known as the Vaccine Injury Compensation Program (VICP) and Countermeasures Injury Compensation Program (CICP).
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