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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.
Following the Trump administration’s warning last month that using acetaminophen – the active ingredient in Tylenol – during pregnancy can increase the risk of autism in children, very few adults say the claim about a causal relationship is “definitely true,” though much of the public is uncertain whether to believe it. Trust in the CDC to provide reliable vaccine information has fallen to a new low.
In the weeks after the Trump administration reduced the number of recommended childhood vaccines for routine use, the public’s trust in the CDC remains at its lowest point. Among those who have heard about the recent changes to the recommended childhood vaccine schedule, more say they expect the changes to have a negative impact than a positive one on children’s health.
Data show that children’s vaccination rates, including MMR and seasonal flu vaccines, have declined in recent years largely due to decreases in vaccinations among White and Asian children. At the same time, and despite the declines among White and Asian children, Black and AIAN children remain least likely to have received recommended childhood vaccinations and the MMR vaccine specifically.
Starting in May of last year, HHS Secretary Kennedy and the CDC/ACIP began to make changes to the federal vaccine schedule for children, culminating in an announcement on January 5 of this year with the most wide-ranging changes to date. This policy brief tracks the number of states that have announced they are no longer following federal government recommendations for childhood vaccines as of January 20, 2026.
This brief discusses the potential implications of increased enforcement actions under the Trump administration for the health and well-being of families and potential broader impacts for communities, the workforce, and the economy, including health care.
These findings from a KFF/Washington Post survey reveal how parents encounter information related to children's health on social media, including trust in content they see online and whether they have specific, trusted influencers when it comes to information about children's health.
This post looks at federal government databases with key health data that went offline on Jan. 31, 2025, including several related to HIV, some of which had returned by Feb. 2, 2025. It briefly describing the affected databases, which include widely used, large-scale national health surveys, indices, and data dashboards, that inform research, policy making, and media coverage about health care and public health.
This volume shares updates from the most recent CDC advisory panel meeting, changes to the CDC webpage on autism and vaccines, and polling on trust in news organizations. Additionally, it shares recent developments in AI and social media policy and new KFF poll findings about perceptions of mifepristone’s safety and prevalence.
President Trump has prioritized mass deportation and detention of undocumented immigrations. This brief looks at recent trends in detention using Immigration and Customs Enforcement (ICE) data and health care risks and challenges facing those held in detention facilities.
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