###Human: Is it mandatory to get the optional vaccines for a 45 days old infant? ###Assistant: Hello. I understand your concern. 1. Optional vaccines are given in special and high-risk kids. Does your child is any one of them? 2. Yes, in the market there are various brands of different vaccines. 3. There is no limit for optional vaccines. 4. If a baby is healthy no high-risk factor I suggest go for routine vaccination.