The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
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.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
This volume shares findings from the latest KFF Tracking Poll on Health Information and Trust, along with updates from Robert Kennedy Jr’s senate hearings. It also examines distrust in public health messaging about bird flu, motivations for sharing information online, and how fraudulent research can sometimes inform AI chatbot models.
As President Trump begins his second term, the public’s trust in health information from key health agencies has fallen over the past 18 months, continuing a decline that began during the COVID-19 pandemic, finds the new KFF Tracking Poll on Health Information and Trust.
This volume explores narratives linking vaccines to autism and misleading claims about the benefits of raw milk. It examines how trust and perceived expertise influence misinformation and AI's role in spreading false mental health information.
Detailed information on immunizations for adults covered under the ACA.
This edition highlights vaccine hesitancy and misinformation around MMR (measles, mumps, and rubella) vaccines as children return to school and measles cases resurge in parts of the U.S. It also examines emerging narratives around COVID-19 vaccine misinformation following the FDA approval of COVID-19 boosters and false claims linking mpox to the vaccines.
In this Monitor, we explore how ongoing misinformation about the safety and efficacy of COVID-19 vaccines may affect the acceptance of new vaccine recommendations. First, we examine the false and misleading claims underlying the Kansas Attorney General’s lawsuit against Pfizer. We also discuss the CDC’s most recent vaccine.
This first edition of the Health Misinformation Monitor explores misinformation about raw milk amid bird flu outbreaks on dairy farms, false vaccine narratives that continue to spread, and legal challenges against abortion pill reversal claims. Additionally, a growing number of states have required public schools to show fetal development videos that some have called biased and inaccurate. This Monitor report also provides a snapshot of new KFF misinformation polling on TikTok and discusses the early challenges faced by The World Health Organization’s new AI tool SARAH in providing accurate answers to health questions.
This issue brief examines well-child visit rates overall and for selected characteristics before and after the pandemic began and discusses recent state and federal policy changes that could impact children’s preventive care. More than half of children under age 21 enrolled in Medicaid or CHIP received a well-child visit in 2019, but the share fell to 48% in 2020, the start of the COVID-19 pandemic.
As rates of childhood vaccination decline and with measles on the rise again, a KFF Health Misinformation Tracking Poll, fielded in late February, examines the extent to which adults have heard and believe misinformation about the measles vaccine.
The latest KFF Health Misinformation Tracking Poll examines misinformation related to the measles vaccine and the public’s views of the U.S. government and social media companies’ role in moderating false claims online.
© 2026 KFF