Recommended vaccines for my chicks?

[Sparko]

Hello! For context I live in the Philippines (there might be diseases that are more common here). I have two sets of chicks:

A. 3 two month old silkies - no vaccines of any kind

B. 6 8-12 days old chicks (RIR and Plymouths) - 1 vaccine called "b1b1"

I talked to both sellers and they said the chicks don't need to get vaccinated but getting other people's opinions wouldn't hurt. So do you recommend me to get them vaccinated or nah? and if so which vaccines?

Thanks <3

 

[Tofu the chicken]

All my chickens have mareks vaccine but only that, and I've never experienced any sicknesses of any kind with just that (although there is some good luck to that), Mareks vaccine Is advised against if not every bird has it though (cause exposing a live vaccine has a small potential to give the sickness to other birds) I personally I think they should be fine without any vaccines