Is it possible for hepa b, dtap and opv vaccines be given at the same.time.health worker planning to do it to my baby?

Yes: These vaccines are often given together.

Do them apart: The vaccine schedule (multiple vaccines at the same time) was set up for convenience. There are no studies to show it is safe to give multiple vaccines together. There are risks to vaccines so you should make sure your doctor explains them to you. For the best safety and immune response all vaccines should be given separately and at least one month apart.