Are Vaccines Safe?

Today children in North America are no the most vaccinated on the Earth. Does this mean they are stronger and healthier or potentially going to be at greater risk to suffer from the negative side effects that vaccines can often have. Today it's considered normal that in the first 18 months of life a child will receive between thirty and forty doses of around fifteen different vaccines. Should parents make a link between the fact that North American children have received more vaccines in the past 25 years and the decline in childrens' health in many areas, from autism, emotional development, cognitive development, allergies, asthma, obesities and juvenile diabetes.
The issue is that there is not enough research done making these connections, nor is there enough research on the vaccines themselves and how they interact with the development and immune system of a child under two years of age. In other countries like New Zealand and medical clinics where children are not given vaccines there is no known autism, rarely allergies, stronger immune systems and less epileptics and ADHD cases. In conclusion, parents today face difficult choices about giving vaccines or not and also a high level of pressure from both society and the medical institute to conform when choosing to not give children vaccines may prevent death and injuries.