Research suggests COVID-19 vaccination can cause changes in a person’s menstrual cycle. But the changes are small and short-lived — and studies have shown there’s no effect on fertility. Yet people on social media are suggesting the cycle changes are evidence of harm.
The warming trend in global temperature continued in 2022, which was the sixth-warmest year on record, according to a recent report from the National Oceanic and Atmospheric Administration. But a viral tweet — using just a small segment of a NOAA graph — wrongly claimed the agency had announced a “global cooling” trend.
An unclear tweet from New York City health officials was meant to caution residents that the latest omicron subvariant, XBB.1.5, might be more likely than previous variants to infect vaccinated or previously infected people. Social media posts misinterpreted the tweet to mean that vaccinated people were at higher risk than unvaccinated people.
Government health agencies disclosed a potential safety concern for strokes in those 65 and older with one of the COVID-19 vaccines, but the agencies haven’t found any causal relationship and the concern was flagged by just one of several monitoring systems. Anti-vaccine campaigners, however, have wrongly claimed the agencies have found a link between the boosters and strokes.
Sports medicine experts say there has been no increase in sudden death or cardiac injury among U.S. athletes since the COVID-19 vaccines became available. Yet anti-vaccine campaigners, comparing unreliable numbers to an unrelated study, have again spread a false narrative about vaccine safety since NFL player Damar Hamlin suffered cardiac arrest.
Buffalo Bills player Damar Hamlin collapsed on the field and suffered a cardiac arrest moments after taking a hit to his chest during a tackle. While it’s not yet known why his heart stopped, some experts say his condition is most likely due to a heart rhythm problem as a result of that impact. Still, people on social media have baselessly speculated that it was caused by a COVID-19 vaccine.