Deputy Gov. Lawrence Ewhrudjakpo made the appeal on Friday during a meeting with proprietors of private schools, in Yenagoa.
He explained that the appeal had become necessary due to reports from immunisation teams indicating resistance and lack of cooperation from some private schools and parents.
Ewhrudjakpo emphasised that the executive order, which mandated immunisation for all nursery and primary school pupils in the state, was intended to promote child wellness and combat preventable child mortality.