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A Project of The Annenberg Public Policy Center
SciCheck’s COVID-19/Vaccination Project

No ‘Bombshell’ On COVID-19 Origins, U.S. Intelligence Rebuts Claims About ‘Sick’ Lab Workers

No ‘Bombshell’ On COVID-19 Origins, U.S. Intelligence Rebuts Claims About ‘Sick’ Lab Workers

It remains unknown how the virus that causes COVID-19 originated, but many scientists think a natural spillover is most likely. Online posts have cited unnamed sources to claim that scientists in Wuhan, China, were the first to get sick with COVID-19. But U.S. intelligence says the researchers’ symptoms were non-specific or inconsistent with COVID-19, and the information has no bearing on the origin of the pandemic.

TikTok Video Mangles American Cancer Society Breast Cancer Estimates

TikTok Video Mangles American Cancer Society Breast Cancer Estimates

Breast cancer in younger women has been increasing gradually in recent decades. But a social media post misrepresents case number projections for 2022 and 2023 to falsely claim they show a dramatic rise in early-onset breast cancer — and then baselessly ties its faulty comparisons to COVID-19 vaccines.  

Cleveland Clinic Study Did Not Show Vaccines Increase COVID-19 Risk

Cleveland Clinic Study Did Not Show Vaccines Increase COVID-19 Risk

Numerous studies have found that additional COVID-19 shots are generally associated with extra protection against the coronavirus. Many people on social media, however, have shared a preliminary finding from a Cleveland Clinic study and misrepresented it as proving that getting more doses increases a person’s risk of infection.

Ventilators Save Lives, Did Not Cause ‘Nearly All’ COVID-19 Deaths

Ventilators Save Lives, Did Not Cause ‘Nearly All’ COVID-19 Deaths

Ventilators can be lifesaving for critically ill COVID-19 patients. A social media claim that a new study shows ventilators killed “nearly all” COVID-19 patients is “quite wrong,” according to the study’s co-author. Ventilator-associated complications can contribute to deaths, but patients are typically put on ventilators when they would otherwise die.

Database Errors Fuel False Claims about HIV Cases in Military

Database Errors Fuel False Claims about HIV Cases in Military

The rate of new HIV infections in the military has been relatively unchanged since 2017. But social media posts falsely claim that the military has recorded a “500% increase in HIV since the COVID vaccine rollout.” A Defense Department spokesperson said errors in a military database sparked the inaccurate claim.

Masking Has Minimal Effects on Respiratory System, Does Not Cause Long COVID

Masking Has Minimal Effects on Respiratory System, Does Not Cause Long COVID

Long COVID is a collection of health problems caused by COVID-19 that remain or appear following the initial infection. It is implausible that face masks cause long COVID, contrary to claims made online. Mask use can temporarily cause discomfort, but physiological effects are not biologically meaningful.