Vaccinations have been a very controversial topic, yet their importance cannot be denied. It is an integral part of the family and public health. Vaccines end the spread of contagious and dangerous diseases such as measles, polio, mumps, chickenpox, whooping cough, diphtheria, and HPV. The importance of vaccines was first noticeable in the outbreak of smallpox and the discovery of the smallpox vaccine. The disease killed millions of people around the world. After the vaccine ...