“Vaccines have saved millions of lives and contributed to the radical extension of human lifespan. They are among the safest and most effective medical products available. Scientists and medical researchers perform large-scale scientific studies on often millions of doses and people to find out if there are any harmful negative effects of vaccines. Yet there is a powerful group of anti-vaccine activists that ignore evidence and reason and prefer to promote ignorance and misinformation about vaccines.
The U. S. government and medical organizations regularly monitor and review the evidence of vaccine safety by reading hundreds of scientific papers and patient reports. They publish their findings in the scientific literature or in expert reports. They have consistently found that vaccines are generally safe and only have extremely rare risks for the most serious side effects.”