FactCheck.org’s SciCheck feature focuses exclusively on false and misleading scientific claims that are made by partisans to influence public policy. It was launched in January 2015 with a grant from the Stanton Foundation. The foundation was founded by the late Frank Stanton, president of CBS for 25 years, from 1946 to 1971.
The Earth is warming at the fastest rate seen in the last 10,000 years, according to NASA, and the consensus among climate scientists is that human activity is causing the change. But a meme on social media tries to undermine the reality of climate change by misrepresenting the views and media coverage of a climatologist popular among those who believe climate change is a “hoax.”
Five Republican senators have penned a letter to President Joe Biden urging him to ban travel to the U.S. from China because of a surge in “mystery” respiratory illnesses among children. But the letter selectively cites outdated information from the World Health Organization, and experts say the illnesses are likely due to known viruses and bacteria and aren’t unexpected.
The mRNA COVID-19 vaccines — like many other vaccines — can contain small amounts of DNA left over from the manufacturing process. There’s no evidence this residual DNA causes “turbo cancer,” or very aggressive cancer. Nor did Moderna admit that “mRNA Jabs Cause Turbo-Cancer,” contrary to an online article that misconstrues a line from a patent application.
A recent federal report shows a 3% increase in the U.S. infant mortality rate between 2021 and 2022, which is the first statistically significant rise in 20 years. The cause of the uptick is unknown, but there’s no evidence that it’s due to COVID-19 vaccination, as some social media posts baselessly suggest.
Being vaccinated against COVID-19 helps protect pregnant people from severe COVID-19. When given during pregnancy, the vaccines can also reduce the risk of hospitalization from COVID-19 early in a baby’s life. A new study adds to the evidence that vaccination during pregnancy is safe for babies, contrary to social media and online claims.
In a “PBS NewsHour” interview, independent presidential candidate Robert F. Kennedy Jr. repeatedly denied previously saying that “no vaccine” is safe and effective. But Kennedy said exactly that on the Lex Fridman podcast in July.
COVID-19 vaccination reduces the risk of death from COVID-19. Social media posts have misused survey data and adverse events reports to falsely claim that COVID-19 vaccines have killed more people than COVID-19. But serious adverse events resulting from vaccination, including deaths, are rare.
Experts agree mammograms are the best tool to screen for breast cancer and that the benefits of the exam outweigh the risks. But a video in Spanish recommended that women over 40 skip mammograms, claiming the test is “unsafe” and “unnecessary.”
As with many medical products, the mRNA COVID-19 vaccines may contain trace amounts of residual DNA from the manufacturing process. It is not considered adulteration, and the Food and Drug Administration is not “required” to pull the vaccines from the market, contrary to viral claims online.
Small amounts of DNA from the manufacturing process may remain in the mRNA COVID-19 vaccines. Purification and quality control steps ensure any leftover DNA is present within regulatory limits. There isn’t reason to think that this residual DNA would alter a person’s DNA or cause cancer, contrary to claims made online.