A chemical widely used to sterilize medical devices is also used for nasal swabs in COVID-19 testing. But a viral video misleadingly suggests that the swabs are dangerous — saying that the chemical causes cancer and can alter DNA. Experts say the chemical’s use in this context does not pose a threat to human health.
A viral headline shared on social media falsely asserts that the Centers for Disease Control and Prevention changed testing thresholds to “virtually eliminate” COVID-19 cases among vaccinated individuals. That’s wrong. The threshold in question simply applies to whether or not there is enough virus present in a sample for further analysis.