Childhood vaccines are vaccines administered to children to protect them from infectious diseases. Vaccines work by introducing a small amount of a weakened or dead pathogen into the body, which stimulates the immune system to produce antibodies that can fight off future infections. Childhood vaccines are given at specific ages to protect children from diseases such as measles, mumps, rubella, polio, chickenpox, and hepatitis B, among others. The schedule and types of vaccines vary depending on the country and region. Vaccines have been proven to be safe and effective in preventing serious illnesses and even death, and are an important public health measure. However, there are still some concerns and controversies surrounding vaccines, such as their potential side effects and the fear of causing autism. It is important for parents to consult with their healthcare providers and educate themselves about the benefits and risks of vaccines in order to make informed decisions for their children’s health.