Key Takeaways
- In the weeks following the Trump administration’s announcement of changes to the recommended childhood vaccine schedule, the public’s trust in the CDC remains at its lowest point since the COVID-19 pandemic, including a 9-percentage point drop among Democrats in recent months saying they trust the CDC for reliable vaccine information. Just over half (55%) of Democrats and fewer Republicans (43%) and independents (46%) now say they trust the agency for vaccine information. In addition, fewer than half of adults (44%) express confidence in U.S. federal health agencies to make recommendations about the childhood vaccine schedule.
- Among the half of U.S. adults who report hearing about the recent changes to the childhood vaccine schedule, more say the changes will have a negative impact (54%) on children’s health than a positive one (26%). Partisans are split, with most Democrats who are aware of the change saying it will have a negative impact on children (83%, or 63% of all Democrats), while Republicans are more likely to say it will have a positive impact (47% of Republicans who are aware of the change, or 34% of all Republicans). About one in five Republicans who are aware of the changes say they will negatively impact children’s health and an additional one in five say they are not sure.
- At least eight in ten U.S. adults across partisans and parents are confident – including about half who of adults who are “very confident” – in the safety of measles, mumps, and rubella (MMR) and polio vaccines, two longstanding childhood vaccines that continue to be recommended as routine. Majorities of adults are also confident in the safety of two of the vaccines that are no longer universally recommended for children following recent changes, hepatitis B (70%) and flu (65%), though fewer are “very confident,” and views are somewhat divided along partisan lines. Fewer (48%) adults are confident in the safety of COVID-19 vaccines for children, including just one in four who are “very confident.” Partisan divisions are sharpest when it comes COVID-19 vaccines, with just three in ten Republicans compared to eight in ten Democrats expressing confidence that they are safe for children.
Confidence and Trust in Federal Health Agencies
In January, the U.S. Centers for Disease Control and Prevention (CDC) announced the Trump administration’s major changes to the federally recommended vaccination schedule for children. This change – along with changes that started in October 2025 – reduces the number of diseases targeted for routine vaccination from 17 to 11, positioning the U.S. as an outlier among peer nations.1 In the weeks following this change, the latest KFF Tracking Poll on Health Information and Trust finds that the public’s trust in the CDC remains at its lowest level since the beginning of the COVID-19 pandemic. Fewer than half (47%) of the public says they have a “great deal” or “fair amount” of trust in the CDC to provide reliable information about vaccines.
Trust among Democrats has declined by nine percentage points since September 2025 (from 64% to 55%) and is down sharply from 88% in September 2023. About four in ten Republicans (43%) and half of independents (46%) say they trust the CDC for reliable information about vaccines, similar to the shares who said the same in September of last year.
One year into President Trump’s second term, fewer than half of adults are confident in federal health agencies like the CDC and the U.S. Food and Drug Administration (FDA) to carry out some of their responsibilities, including making recommendations for children’s vaccines. Most adults (56%) say they have “little” to “no confidence” in federal health agencies to make recommendations about childhood vaccine schedules, including three in ten (29%) who have no confidence “at all.” Just over four in ten have “a lot” (15%) or “some” (29%) confidence in the agencies’ ability to do this.
About half of Democrats (51%) say they have at least “some” confidence in government health agencies to make recommendations about childhood vaccine schedules, compared to fewer Republicans (40%). Forty-five percent of independents say they are confident in government health agencies to make these recommendations, while 55% say they have “a little” confidence or “none at all.”
Mirroring Republicans, fewer than half of supporters of the Make America Healthy Again (MAHA) movement say they trust U.S. federal health agencies to make recommendations about vaccine schedules (45%). Overall, 45% of U.S adults say they are supporters of the MAHA movement, and this group is largely made up of Republicans and Republican leaners (65%) and Make America Great Again (MAGA) supporters (53%).
This limited confidence extends beyond childhood vaccine recommendations to other core responsibilities of federal health agencies. Fewer than half of the public have at least “some” confidence in the agencies to ensure safety and effectiveness of vaccines approved for use in the U.S. (46%), make decisions based on science rather than the personal views of agency officials (38%), or act independently, without interference from outside interests (34%).
Democrats have more confidence than Republicans in these agencies to ensure vaccine safety and effectiveness (55% of Democrats vs. 45% of Republicans) and act independently, without outside interference (41% of Democrats vs. 33% of Republicans). Similar minorities of Democrats (44%) and Republicans (40%) express confidence in federal health agencies to make decisions based on science rather than personal views of agency officials.
KFF’s latest Tracking Poll on Health Information and Trust finds that a majority of the public continue to disapprove of Robert F. Kennedy Jr.’s job performance as Health and Human Services (HHS) Secretary and his handling of U.S. vaccine policy. About four in ten (44%) say they approve of his handling of his job as HHS Secretary, compared to over half who say they disapprove (55%). Similarly, about four in ten (43%) approve of Kennedy’s handling of U.S. vaccine policy while nearly six in ten (57%) disapprove. This is a slight change from September when 37% approved of his handling of vaccine policy, but views remain sharply divided along partisan lines, with large shares of Democrats disapproving and large shares of Republicans approving. Among supporters of the MAHA movement, about seven in ten approve of Kennedy’s job performance overall (72%) and his handling of vaccine policy (69%).
Reactions to the Federal Changes in the Recommended Childhood Vaccine Schedule
About half of the public, and a similar share of parents, say they have heard “a lot” (14%) or “some” (38%) about the federal government’s recent changes to the recommended childhood vaccine schedule. The other half report limited awareness, including three in ten who have not heard much (28%) and one in five who have heard “nothing at all” (21%).
Among those who have heard at least “some” about the changes, reactions tilt negative but are more positive among Republicans and MAHA supporters. For example, among the half of the public who have heard about the recent changes to the childhood vaccine recommendations, twice as many say the change will have a negative impact on children’s health (54%) as say it will have a positive impact (26%). Views of how the change will impact children is divided among partisans, with about eight in ten Democrats who are aware of the change saying it will negatively impact children’s health (83%, or 63% of total Democrats). Nearly half of Republicans who are aware of the change say it will have a positive impact (47%, or 34% of total Republicans). About one in five Republicans who have heard about the change say it will either have a negative impact (23%) or aren’t sure of the impact it will have (20%).
Again, mirroring views of Republicans overall, about half of MAHA supporters who are aware of the changes say they will positively impact children’s health (51%, 33% of total MAHA supporters), compared to one in five who say it will have a negative impact on children’s health.
In a statement made about the change, Health Secretary Kennedy predicted it would “rebuild trust in public health.” However, those who are aware of recent changes to the federal vaccine recommendations are also nearly four times as likely to say that the change makes them less trusting of federal health agencies such as the FDA and CDC (53%) rather than more trusting (14%), while one-third of this group (33%) say the change does not make a difference in their trust.
Supporters of the MAHA movement have mixed reactions. Similar shares of MAHA supporters who are aware of the change say it makes them trust federal agencies more (28%) or less (27%), while at least four in ten (45%) say this does not affect their level of trust. Partisans are divided, with most Democrats who are aware of the change saying it makes them less trusting of federal health agencies (80%) while about half of Republicans saying it does not impact their trust.
Confidence in Safety of Vaccines for Children
While large majorities of adults are confident in the safety of several vaccines for children, including both the polio vaccine and the measles, mumps, and rubella (MMR) vaccine, public confidence in vaccine safety is somewhat lower for vaccines the federal government has recently shifted from routine recommendations to shared clinical decision-making for children.
Large majorities of adults say they are confident that polio vaccines (82%) and MMR vaccines (81%) are safe for children, including about half who say they are “very confident” (50% and 48% respectively). Both the MMR and polio vaccines continue to be recommended for routine immunization for all children.
While most adults are at least “somewhat confident” in the safety of hepatitis B (70%) and flu vaccines (65%) for children, smaller shares report being “very confident” (37% and 33% respectively). Confidence is lowest for the COVID-19 vaccine, with fewer than half of adults (48%) saying they are confident the COVID-19 vaccine is safe for children, including just one in four who are very confident. Three in ten adults say they are “not at all confident” in the safety of the COVID-19 vaccine for children, more than twice the share for any of the other vaccine asked about in this poll. These three vaccines were moved off the routine recommendation list to shared clinical decision-making, meaning vaccination is now determined through provider-patient discussions rather than recommended for all children.
Confidence in long-standing childhood vaccines like MMR and polio is bipartisan, with at least eight in ten across parties saying they are confident these vaccines are safe for children. While at least half across partisans express confidence in the safety of hepatitis B and flu vaccines for children, views are more partisan for these two vaccines that have recently been the subject of changing recommendations from federal health authorities. More than eight in ten (85%) Democrats say they are confident that the hepatitis B vaccine is safe for children, compared with smaller shares of independents (69%) and Republicans (61%). The poll finds a similar pattern for flu vaccines, with about eight in ten Democrats expressing confidence, larger than the share of independents (67%) or Republicans (52%) who say the same.
The partisan divide is widest for the COVID-19 vaccine. About eight in ten Democrats say they are confident in the safety of COVID-19 vaccines for children, nearly three times the share of Republicans who say the same (79% vs. 28%). About four in ten (45%) independents say they are confident in the safety of this vaccine for children. Partisanship has played a significant role in views of the COVID-19 vaccine since it was first available to the U.S. public in 2021.
MAHA supporters are among the groups least confident in the safety of the COVID-19 vaccine for children (31%). However, a majority of MAHA supporters are confident in the safety of the polio vaccines (78%) and MMR vaccines (77%), and to a lesser extent heptatitis B (60%) and the flu vaccine (55%).
Like the public overall, larger shares of parents express confidence in the safety of polio (77%) vaccines, MMR (76%), and to a lesser extent hepatitis B (70%) vaccines for children, compared to the flu (57%) or COVID-19 (31%) vaccines. This is consistent with poll findings from a KFF/Washington Post Survey of Parents, conducted last summer, which showed that trust in the flu and COVID-19 vaccines’ safety for children was divided along partisan lines, while at least eight in ten parents across partisanship were confident in the safety of polio and MMR vaccines.
