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A Project of The Annenberg Public Policy Center

Q&A on Changes to Recommendations for Combined MMR and Chickenpox Vaccine

Q&A on Changes to Recommendations for Combined MMR and Chickenpox Vaccine

On Sept. 18, the vaccine advisory committee for the Centers for Disease Control and Prevention voted to change its recommendation on the combined vaccine for chickenpox and measles, mumps and rubella, called the MMRV vaccine. We spoke to experts about claims made at the meeting as well as the implications of the vote.

Trump Misleads on Climate Change and Renewables at U.N.

Trump Misleads on Climate Change and Renewables at U.N.

In an hourlong address before the U.N. General Assembly on Sept. 23, President Donald Trump lashed out at those promoting “the green energy agenda.” Along the way, he made numerous false and misleading claims about renewable energy and climate change, many of which we’ve fact-checked before.

Trump Administration’s Problematic Claims on Tylenol and Autism

Trump Administration’s Problematic Claims on Tylenol and Autism

In a Sept. 22 press conference that he had billed as “one of the biggest [medical] announcements … in the history of our country,” President Donald Trump touted an unproven link between autism and the use of Tylenol, or acetaminophen, during pregnancy.

Repeated Falsehoods at Autism Press Conference

Repeated Falsehoods at Autism Press Conference

An hourlong press conference about autism was filled with false and misleading claims about the condition and vaccines from President Donald Trump and Health and Human Services Secretary Robert F. Kennedy Jr., many of which we have written about before.

Rural Health Fund Falls Short of Estimated Medicaid Cuts

Rural Health Fund Falls Short of Estimated Medicaid Cuts

In the battle over how the One Big Beautiful Bill Act affects rural hospitals, Health and Human Services Secretary Robert F. Kennedy Jr. has touted a five-year $50 billion fund as “an infusion of cash” that will “restore and revitalize” rural communities. But his statements ignore the higher estimated Medicaid spending cuts to rural areas under the law.

The Facts Behind Claims on Autism, Tylenol and Folate

The Facts Behind Claims on Autism, Tylenol and Folate

News reports have indicated Health and Human Services Secretary Robert F. Kennedy Jr. may point to Tylenol and folate deficiency in his promised announcement on the causes of autism. But neither Tylenol nor folate deficiency has been shown to cause autism. Some evidence has pointed away from Tylenol as a risk factor.

Few Mass Shooters Have Been Transgender

Few Mass Shooters Have Been Transgender

Q: Have many of the mass shooters been transgender?

A: The number of transgender mass shooters in the U.S. varies depending on how “mass shooting” is defined, but is relatively small. The Gun Violence Archive, which uses a broader definition, lists five mass shootings by transgender or nonbinary people since January 2013. That’s less than 0.1% of the mass shootings it says happened in that period.  

Trump Again Overstates Number of Drug Overdose Deaths in U.S.

Trump Again Overstates Number of Drug Overdose Deaths in U.S.

Reviving an unfounded claim he has made for several years, President Donald Trump on Sept. 5 overstated the number of Americans who died in 2024 of drug overdoses, saying that he believed 300,000 or “350,000 people died last year from drugs.” A spokesperson for the Centers for Disease Control and Prevention told us the provisional number of drug overdose deaths in 2024 was 79,383, and an expert in addiction medicine told us Trump’s number was “a gross exaggeration.”

Viral Claims About Charlie Kirk’s Words

Viral Claims About Charlie Kirk’s Words

Since the fatal shooting of Charlie Kirk on Sept. 10, social media users have shared posts showing, quoting or paraphrasing remarks the posts attribute to the conservative activist. Many readers have asked us to provide the facts on whether Kirk, the founder of the youth political group Turning Point USA, made several of these comments.