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SciCheck’s COVID-19/Vaccination Project

Posts Sharing Mpox Misinformation Recycle Claims from Prior Viral Outbreaks

Posts Sharing Mpox Misinformation Recycle Claims from Prior Viral Outbreaks

Responding to rising mpox cases in Africa, the World Health Organization declared a public health emergency of international concern on Aug. 14. Social media posts subsequently repeated a plethora of false or baseless claims, including that COVID-19 vaccines cause the viral disease or that the current outbreak is part of a global conspiracy.

Flawed Autopsy ‘Review’ Revives Unsupported Claims of COVID-19 Vaccine Harm, Censorship

Flawed Autopsy ‘Review’ Revives Unsupported Claims of COVID-19 Vaccine Harm, Censorship

COVID-19 vaccination is generally very safe, and except for extremely rare cases, there is no evidence that it contributes to death. Social media posts about a now-published, but faulty review of autopsy reports, however, are repeating an unfounded claim from last summer that “74% of sudden deaths are shown to be due to the COVID-19 vaccine.”

Posts Misrepresent Ruling on COVID-19 School Mandate Lawsuit

Posts Misrepresent Ruling on COVID-19 School Mandate Lawsuit

A federal appeals court has revived a lawsuit against the Los Angeles Unified School District for its now-rescinded COVID-19 vaccine requirement. The court said the case should be allowed to develop beyond the preliminary arguments. But anti-vaccination activists have twisted the opinion to falsely claim the court had “declared that the mRNA covid jab is NOT a vaccine.”

Misleading Claims on Well-Known Rare Risk of AstraZeneca COVID-19 Vaccine

Misleading Claims on Well-Known Rare Risk of AstraZeneca COVID-19 Vaccine

A rare risk of dangerous blood clots associated with the AstraZeneca COVID-19 vaccine was identified and reported in early 2021. This month, the company announced it was pulling the vaccine off the market globally, citing a decline in demand. Social media posts misleadingly linked the decision to the company having “admitted” the rare side effect “for the first time” in court documents and used it to impugn all vaccines.

Still No Evidence COVID-19 Vaccination Increases Cancer Risk, Despite Posts

Still No Evidence COVID-19 Vaccination Increases Cancer Risk, Despite Posts

It has not been shown that COVID-19 vaccines cause or accelerate cancer. Yet opponents of the vaccines say a new review article “has found that COVID-19 mRNA vaccines could aid cancer development.” The review conclusions are mainly based on the misinterpretation of a study on mRNA cancer vaccines in mice.

Q&A on Reducing COVID-19 Risk for Elderly, Immunocompromised

Q&A on Reducing COVID-19 Risk for Elderly, Immunocompromised

While the risks associated with COVID-19 generally have decreased over time due to prior exposure to the vaccines and the virus, some people remain at elevated risk, such as the elderly and immunocompromised. The updated COVID-19 vaccines and, in some cases, a new monoclonal antibody can provide increased protection for this group.

O.J. Simpson Died from Cancer, Not COVID-19 Vaccine

O.J. Simpson Died from Cancer, Not COVID-19 Vaccine

O.J. Simpson, a football star who was acquitted in the murder of his ex-wife and her friend, died of cancer on April 10 at age 76. Misinformation spread online within hours of the news. Social media posts falsely claimed that the cancer was related to his COVID-19 vaccination. Simpson was vaccinated, but there is no evidence that vaccination causes cancer or that it was to blame for his death.

Posts Raise Unfounded Concerns About Aluminum in Vaccines

Posts Raise Unfounded Concerns About Aluminum in Vaccines

Small amounts of aluminum have been used for many decades to strengthen the immune response to vaccines. Exposure to high levels of aluminum has been associated with brain and bone problems, but there is no evidence that the level of exposure provided by vaccines leads to such toxicity, contrary to social media claims.

How is mRNA in vaccines delivered to cells?

Messenger RNA, or mRNA, vaccines work by instructing a small number of a person’s cells to make specific proteins. In the case of the approved mRNA vaccines for COVID-19, the cells make spike protein — one component of the virus that causes COVID-19.

For mRNA vaccines to work, it’s not enough to just put mRNA molecules into a vial and then inject them into a person’s muscle. One innovation that made the current mRNA vaccines possible was the use of lipids to encircle the mRNA molecules.

Explaining the New CDC Guidance on What To Do if You Have COVID-19

Explaining the New CDC Guidance on What To Do if You Have COVID-19

Q: Is one day isolation sufficient to stop forward transmission of COVID-19? 

A: People with COVID-19 could potentially transmit it to others well beyond a day after developing symptoms or testing positive. New guidance from the CDC advises people to isolate until they have been fever-free and with symptoms improving for at least 24 hours, and then take precautions for five days, which covers the period when “most people are still infectious.”