When you say "I believe" what you are really saying is that you have no medical expertise in this area and therefore really don't know what you are talking about and you don't understand how vaccines work or how they are researched and tested. So why is it that humans are living longer than ever before? Globally, life expectancy has increased by more than 6 years between 2000 and 2019, according to WHO (World Health Organisation. How is it that vaccines have eradicated smallpox and viruses such as rinderpestvirus? One of history's deadliest diseases, smallpox is estimated to have killed more than 300 million people since 1900 alone. But a massive global vaccination campaign put an end to the disease in 1977. True story...my friend's son died at the age of 14, 24 hours after receiving a routine vaccination. Everyone leapt to the conclusion that the vaccine caused his death. When autopsied it turned out he had an undiagnosed heart defect which would have been fatal irrespective of whether or not he had been vaccinated. Just because one event (death) follows another (vaccination), it does not mean that the first event caused the second. That's a classic rookie mistake to make in research and deduction. I could say that every time I had had a car accident, I had eaten a meal in the hours prior. It does not mean the meal caused the accident.