As mentioned.You should never vaccinate sick animal.This is because vaccine will challange the immune system that is already fighting the disease making it weaker in defence.For the future, KEVEVAPI has vaccines that i find effective. For Newcastle, use AVIVAX.For coccidiosis you can institute treatment and use coccidiostats that are available in the market.There is no vaccine available for coccidiosis.Hygiene expecially dump litter should be avoided for control.