A UK-wide issue is currently affecting the supply of children's flu vaccinations.
Health boards are receiving fewer vaccines than needed due to the nationwide wide shortage of the nasal spray, Fluenz Tetra.
A spokesperson for NHS Highland told Skye Times Online: "The current child flu vaccine supply will be prioritised for children aged between 2-5 years old (aged 2 on September 1st 2019 and not yet in school) and those aged 5-18 years with underlying health conditions.
"These children are at greatest risk from the flu virus.
"While we await updates on further vaccine supply, each NHS Board is making arrangements on how best to manage existing supply.
"As result, flu vaccinations in some primary schools could be postponed either for the whole school or for year groups within the school but local NHS Boards are making plans to ensure that those school children affected will be offered an opportunity to be vaccinated at a later date.
"Health Protection Scotland advises that in most years, flu does not start circulating before December."