Vaccination and infection both provide protective immunity to COVID-19, particularly against severe disease. But gaining immunity through infection is far riskier than vaccination. Posts citing a new Lancet study omit that important context and also misleadingly claim the study shows immunity after infection is superior to vaccination immunity.
Most U.S. intelligence agencies assess a spillover from an animal is most likely the origin of COVID-19, but recent news reports say the Energy Department now favors the lab-leak hypothesis. Online posts wrongly claim this means a lab origin has been confirmed.
Scientists say the experiments Pfizer has performed on the coronavirus are standard for the industry. Baseless claims that the company is mutating the virus for profit, however, have been circulating since the release of a popular undercover video from the conservative activist group Project Veritas.
Health problems that are reported to the Vaccine Adverse Event Reporting System after vaccination are not necessarily caused by a vaccine. Yet social media posts distorted a comment from a Centers for Disease Control and Prevention official about such reports to falsely say he admitted the vaccines cause “debilitating illnesses.”
Moderna’s CEO said in January that the company’s total production in 2019 was “100,000 dose,” referring to all its vaccines and therapeutics. Online posts distorted the remarks to falsely claim Moderna made COVID-19 vaccines “before the pandemic started.” Moderna’s first batch of COVID-19 vaccines wasn’t ready until February 2020.
Thai officials attributed the collapse of the king’s eldest daughter in December to a bacterial infection, not to COVID-19 vaccination, as some have baselessly claimed online. Rumors about the country banning Pfizer’s vaccines are also “fake news,” officials said.
Research suggests COVID-19 vaccination can cause changes in a person’s menstrual cycle. But the changes are small and short-lived — and studies have shown there’s no effect on fertility. Yet people on social media are suggesting the cycle changes are evidence of harm.
An unclear tweet from New York City health officials was meant to caution residents that the latest omicron subvariant, XBB.1.5, might be more likely than previous variants to infect vaccinated or previously infected people. Social media posts misinterpreted the tweet to mean that vaccinated people were at higher risk than unvaccinated people.
Government health agencies disclosed a potential safety concern for strokes in those 65 and older with one of the COVID-19 vaccines, but the agencies haven’t found any causal relationship and the concern was flagged by just one of several monitoring systems. Anti-vaccine campaigners, however, have wrongly claimed the agencies have found a link between the boosters and strokes.
The COVID-19 vaccines were tested in large, randomized controlled trials before the Food and Drug Administration authorized them for emergency use. But a popular YouTube video spins a conspiracy theory that distorts legal codes to falsely claim otherwise.