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.
Case numbers for the global mpox outbreak have decreased since 2022, but the situation in Africa has noticeably worsened. On Aug. 14, the World Health Organization once again declared an mpox public health emergency of international concern. Here, we answer questions about the current increase in mpox cases, the international public health emergency and what this means for people in Africa and globally.
The circulation of H5N1 bird flu in animals and limited infections in humans have motivated flu preparedness activities, such as stockpiling vaccines. Social media posts have baselessly implied that these efforts are evidence that a new laboratory-derived version of the virus is going to cause a pandemic — or even that there is a conspiracy to release bird flu from a lab.
In a leaked phone call with independent presidential candidate Robert F. Kennedy Jr., former President Donald Trump incorrectly suggested that childhood vaccine doses are too large and can provoke sudden, radical changes in babies. There’s no evidence that the current vaccination schedule is harmful to kids.
A federal appeals court has revived a lawsuit against the Los Angeles Unified School District for its now-rescinded COVID-19 vaccine requirement.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.”
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.
A recent video promoting independent presidential candidate Robert F. Kennedy Jr. promises to “start with some irrefutable facts.” The over 30-minute video, narrated by actor Woody Harrelson, begins with some biographical truths about the candidate, but veers into promoting various debunked or unsupported narratives about vaccines.
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.
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, 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.