It's after concerns 600,000 doses aren't accounted for.
The head of the HSE insists no flu vaccines sent out to GPs and pharmacists have gone missing.
It's after concerns that 600,000 doses aren't accounted for.
1.3 million doses of the flu jab have been distributed so far.
However, in a letter sent to GPs on Monday, the HSE says claims for reimbursement costs have only been made for 700,000 doses.
CEO Paul Reid has told the Oireachtas Health Committee that doesn't mean the other 600,000 are missing.
No more deliveries of the flu vaccine are being made for now until the executive can get more information. It says the remaining supply will be prioritised for practices where stocks are running low.
It's also reminded doctors to only give the jab to people in at-risk groups - including over 65s, healthcare workers and pregnant women.
The HSE says that's always been the policy and is based on public health advice.