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A Project of The Annenberg Public Policy Center

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.

No Evidence Excess Deaths Linked to Vaccines, Contrary to Claims Online

No Evidence Excess Deaths Linked to Vaccines, Contrary to Claims Online

COVID-19 vaccines substantially reduce the risk of dying from COVID-19, and serious side effects are very rare. Excess deaths among working-age adults in 2021 and 2022 were due to COVID-19 and other factors, not vaccination. Faulty logic underlies claims that vaccines caused mass disability and economic harm.

Fewer Cases of Flu Due to Pandemic Precautions, Contrary to Viral Claim

Fewer Cases of Flu Due to Pandemic Precautions, Contrary to Viral Claim

Public health organizations have explained that the reason there were far fewer cases of the flu in 2020 and 2021 was likely due to measures adopted to slow the spread of the virus that causes COVID-19, such as handwashing and social distancing. But a post on social media has spread the false claim that the dip in flu cases suggests that COVID-19 was a hoax.

Posts Exaggerate Lab Findings About COVID-19’s Impact on Immune System

Posts Exaggerate Lab Findings About COVID-19’s Impact on Immune System

Outside of long COVID or very severe cases, most research suggests COVID-19 doesn’t cause lasting damage to the immune system. A few studies have found evidence of some possible damage, but nothing as severe as an immunodeficiency. People on social media, however, are misinterpreting a recent study to incorrectly claim COVID-19 is HIV-like.

What the Cochrane Review Says About Masks For COVID-19 — and What It Doesn’t

What the Cochrane Review Says About Masks For COVID-19 — and What It Doesn’t

People online are touting the results of a Cochrane review to incorrectly claim that it shows masks “don’t work” against the coronavirus. But the primary conclusion of the review is that it’s uncertain from randomized controlled trials whether mask interventions in the community help slow the spread of respiratory illnesses.

Posts Make False Comparisons Between COVID-19 Immunity From Infections and Vaccines

Posts Make False Comparisons Between COVID-19 Immunity From Infections and Vaccines

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.

No Evidence Pfizer Conducting Any Inappropriate Coronavirus Experiments

No Evidence Pfizer Conducting Any Inappropriate Coronavirus Experiments

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.