There's no evidence that vaccines are dangerous. According to WHO, the current vaccines are safe and effective.
One Facebook post states that there are "unexplained illnesses" among vaccinated people. There is no evidence that vaccines are ineffective or dangerous.
World-leading organizations such as WHO and the Centers for Disease Control and Prevention (CDC) deem the vaccines safe and effective. The current vaccines were evaluated on thousands of people in randomized controlled trials. According to the CDC, the Food and Drug Administration (FDA) approved the vaccine after meeting the federal agency's "rigorous scientific standards for safety, effectiveness and manufacturing quality needed to support approval or authorization of a vaccine."
WHO states that the vaccines are safe for healthy individuals and those with underlying medical conditions.
A small number of people can suffer from rare adverse vaccine side effects, including anaphylaxis or thrombocytopenia syndrome. That said, the COVID-19 vaccines do not cause unknown illnesses. According to the CDC, the proportion of people suffering from rare side effects remains small, and the vaccine's benefits continue to outweigh the risks.
Reuters has debunked other claims related to vaccine misinformation. These include false claims about vaccines causing blood anomalies and Alzheimer's disease.
According to Euronews, in September 2021, England's Deputy Chief Medical Officer Jonathan Van-Tam stated that the vaccines had saved 112,000 lives so far in the U.K.
The CDC states that the vaccines have undergone "the most intensive safety monitoring in U.S. history."
Bloomberg stats show that more than 7.36 billion doses have been safely administered across 184 countries.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19, including symptoms, prevention, and available treatment, please refer to the World Health Organization or your national healthcare authority.